Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Subphylum Chelicerata
- Subphylum Crustacea
- Subphylum Hexapoda
- Class Collembola
- Class Diplura
- Class Entognatha accepted as Hexapoda
- Class Insecta
- Order Alienoptera † accepted as Blattodea
- Order Amphiesmenoptera incertae sedis †
- Order Anoplura accepted as Phthiraptera
- Order Archaeognatha
- Order Archaeorthoptera (awaiting allocation) †
- Order Archaeorthoptera incertae sedis
- Order Argentinoptera †
- Order Blattodea
- Order Blattoptera †
- Order Caloneurida
- Order Caloneurodea †
- Order Cnemidolestodea †
- Order Coleoptera
- Order Coxoplectoptera †
- Order Dermaptera
- Order Diaphanopterodea †
- Order Diaphanopteroidea accepted as Diaphanopterodea †
- Order Dicliptera †
- Order Dicondylia incertae sedis
- Order Dictyoptera (awaiting allocation)
- Order Dictyoptera incertae sedis
- Order Diptera
- Family Acartophthalmidae Czerny, 1928
- Family Acroceridae Leach, 1815
- Family Agromyzidae Fallén, 1823
- Family Alinkidae Krzemiński, 1992 † accepted as Procramptonomyiidae Kovalev, 1985 †
- Family Anisopidae accepted as Anisopodidae Knab, 1912
- Family Anisopodidae Knab, 1912
- Family Ansorgiidae Evenhuis, 1994 †
- Family Antefungivoridae Rohdendorf, 1938 †
- Family Anthomyiidae Latreille, 1829
- Family Anthomyzidae Czerny, 1903
- Family Apioceridae Bigot, 1857
- Family Apsilocephalidae Nagatomi, Saigusa, Nagatomi & Lyneborg, 1991
- Family Apystomyiidae Nagatomi & Liu, 1994
- Family Archisargidae Rohdendorf, 1951 †
- Family Architendipedidae Rohdendorf, 1962 † accepted as Ptychopteridae Osten Sacken, 1862
- Family Archizelmiridae Rohdendorf, 1962 †
- Family Asilidae Latreille, 1802
- Family Asiloidea incertae sedis
- Family Asiochaoboridae Hong & Wang, 1990 †
- Family Asteiidae Rondani, 1856
- Family Atelestidae Hennig, 1970
- Family Athericidae Nowicki, 1873
- Family Aulacigastridae Duda, 1924
- Family Australimyzidae Griffiths, 1972
- Family Austroleptidae Nagatomi, 1982
- Family Axymyiidae Shannon, 1921
- Family Bengaliidae Brauer & Bergenstamm, 1889
- Family Bibionidae Fleming, 1821
- Family Blephariceridae Loew, 1862
- Family Blepharoceridae accepted as Blephariceridae Loew, 1862
- Family Boholdoyidae Kovalev, 1985 †
- Family Bolithophilidae accepted as Bolitophilidae Winnertz, 1863
- Family Bolitophilidae Winnertz, 1863
- Family Bombylidae accepted as Bombyliidae Latreille, 1802
- Family Bombyliidae Latreille, 1802
- Family Borboridae Newman, 1834 accepted as Sphaeroceridae Macquart, 1835
- Family Brachystomatidae Melander, 1908
- Family Braulidae Egger, 1853
- Family Calliphoridae Brauer & Bergenstamm, 1889
- Family Camillidae Frey, 1921
- Family Campichoetidae Griffiths, 1972
- Family Canaceidae accepted as Canacidae Jones, 1906
- Family Canacidae Jones, 1906
- Family Canthyloscelidae Shannon, 1927
- Family Carnidae Newman, 1834
- Family Cascopleciidae Poinar, 2010 †
- Family Cecidomyiidae Newman, 1835
- Family Celyphidae Bigot, 1852
- Family Ceratopogonidae Newman, 1834
- Family Chamaemyiidae Hendel, 1910
- Family Chaoboridae Edwards, 1932
- Family Chimeromyiidae Grimaldi & Cumming, 2009 †
- Family Chironomidae Macquart, 1838
- Family Chironomoidea incertae sedis
- Family Chloropidae Rondani, 1856
- Family Christelenkidae Roháček, 2023 †
- Family Chyromyidae Hendel, 1916
- Family Circumphallidae Papp, 2011
- Family Clusiidae Hendel, 1916
- Family Clusiomitidae Roháček & Hoffeins, 2021 †
- Family Coelopidae Hendel, 1910
- Family Coenomyiidae
- Family Conopidae Latreille, 1802
- Family Cordyluridae
- Family Corethrellidae Edwards, 1932
- Family Cratomyiidae Mazzarolo & Amorim, 2000 † accepted as Zhangsolvidae Nagatomi & Yang, 1998 †
- Family Crosaphididae Kovalev, 1983 †
- Family Cryptochaetidae accepted as Cryptochetidae Brues & Melander, 1932
- Family Cryptochetidae Brues & Melander, 1932
- Family Ctenostylidae Bigot, 1882
- Family Culicidae Meigen, 1818
- Family Curtonotidae Enderlein, 1914
- Family Cuterebridae Brauer, 1887
- Family Cylindrotomidae Schiner, 1863
- Family Cypselosomatidae Hendel, 1931
- Family Deuterophlebiidae Edwards, 1922
- Family Dexiidae Sharp, 1887
- Family Deximorpha Brauer & Bergenstamm, 1889 accepted as Tachinidae Bigot, 1853
- Family Diadocidiidae Winnertz, 1863
- Family Diastatidae Hendel, 1917
- Family Dictyodipteridae Rohdendorf, 1961 †
- Family Diopsidae Billberg, 1820
- Family Diplopolyneuridae Rohdendorf, 1962 † accepted as Pediciidae Osten Sacken, 1860
- Family Diptera (awaiting allocation)
- Family Ditomyiidae Kylin, 1919
- Family Dixamimidae † accepted as Chaoboridae Edwards, 1932
- Family Dixidae Schiffner, 1868
- Family Dolichopodidae Latreille, 1809
- Family Drosophilidae Rondani, 1856
- Family Dryomyzidae Schiner, 1864
- Family Dyspolyneuridae Rohdendorf, 1961 †
- Family Elliidae Krzeminska, Blagoderov & Krezmiñski, 1993 †
- Family Empididae Latreille, 1804
- Family Eoditomyiidae Ansorge, 1996 †
- Family Eolimnobiidae Rohdendorf, 1962 †
- Family Eomyiidae Rohdendorf, 1962 †
- Family Eophlebomyiidae Cockerell, 1925 †
- Family Eopleciidae Rohdendorf, 1946 †
- Family Eopolyneuridae Rohdendorf, 1962 †
- Family Eoptychopteridae Handlirsch, 1906 † accepted as Ptychopteridae Osten Sacken, 1862
- Family Eostratiomyiidae Rohdendorf, 1962 †
- Family Ephydridae Zetterstedt, 1837
- Family Eremochaetidae Ussatchov, 1968 †
- Family Eremoneura (awaiting allocation)
- Family Eucaudomyiidae Grimaldi, 2016 †
- Family Eurychoromyiidae endel, 1910 accepted as Lauxaniidae Macquart, 1835
- Family Evocoidae Yeates, Irwin & Wiegmann, 2006
- Family Fanniidae Schnabl & Dziedzicki, 1911
- Family Fergusoninidae Hennig, 1958
- Family Fungivoritidae Rohdendorf, 1946 †
- Family Galliidae Lukashevich & Mostovski, 2023 †
- Family Gasterophilidae Girschner, 1896
- Family Geomyzidae Fallén, 1823 accepted as Opomyzidae Fallén, 1820
- Family Glossinidae Theobald, 1903
- Family Gobryidae McAlpine, 1997
- Family Gracilitipulidae Hong & Wang, 1990 † accepted as Pediciidae Osten Sacken, 1860
- Family Grauvogeliidae Krzemiński, Krzemińska & Papier, 1994 †
- Family Helcomyzidae Hendel, 1924
- Family Heleomyzidae Westwood, 1840
- Family Helomyzidae accepted as Heleomyzidae Westwood, 1840
- Family Helosciomyzidae Steyskal, 1965
- Family Hennigmatidae Shcherbakov, 1995 †
- Family Hesperinidae Walker, 1848
- Family Heterocheilidae McAlpine, 1991
- Family Heteropezidae Schiner, 1868
- Family Hilarimorphidae Williston, 1896
- Family Hippoboscidae Samouelle, 1819
- Family Hippoboscoidea incertae sedis †
- Family Hoffeinsmyiidae Michelsen, 2009 †
- Family Homalocnemiidae Collin, 1928
- Family Huttoninidae Steyskal, 1965
- Family Hybotidae Meigen, 1820
- Family Hyperoscelididae Hardy & Nagatomi, 1960
- Family Hyperpolyneuridae Rohdendorf, 1961 †
- Family Hypodermatidae Rondani, 1856
- Family Inbiomyiidae Buck, 2006
- Family Ironomyiidae McAlpine & Martin, 1966
- Family Iteaphilidae Wahlberg & Johanson, 2018
- Family Kaluginamyiidae Lukashevich, Pepinelli & Currie, 2020 †
- Family Keroplatidae Rondani, 1856
- Family Kovalevisargidae Mostovski, 1997 †
- Family Lauxaniidae Macquart, 1835
- Family Leptidae Burmeister, 1837 accepted as Rhagionidae Latreille, 1802
- Family Lestremiidae accepted as Cecidomyiidae Newman, 1835
- Family Limnorhyphidae Hong, 1983 † accepted as Perissommatidae Colless, 1962
- Family Limoniidae Speiser, 1909
- Family Lonchaeidae Loew, 1861
- Family Lonchopteridae Macquart, 1835
- Family Luanpingitidae Zhang, 1986 †
- Family Lygistorrhinidae Edwards, 1925
- Family Macroceridae Rondani, 1856
- Family Marginidae McAlpine, 1991
- Family Megamerinidae Hendel, 1913
- Family Mesophantasmatidae Rohdendorf, 1962 †
- Family Mesosciophilidae Rohdendorf, 1946 †
- Family Mesothaumaleidae † accepted as Thaumaleidae Bezzi, 1913
- Family Micropezidae Blanchard, 1840
- Family Microphoridae Collin, 1960 accepted as Dolichopodidae Latreille, 1809
- Family Milichiidae Schiner, 1862
- Family Mormotomyiidae Austen, 1936
- Family Muscidae Latreille, 1802
- Family Musidoromimidae Rohdendorf, 1962 †
- Family Mycetobiidae accepted as Anisopodidae Knab, 1912
- Family Mycetophilidae Newman, 1834
- Family Mydaidae accepted as Mydidae Latreille, 1809
- Family Mydidae Latreille, 1809
- Family Mystacinobiidae Holloway, 1976
- Family Mysteromyiidae Grimaldi, 2016 †
- Family Mythicomyiidae Melander, 1902
- Family Nadipteridae Lukashevich, 1995 †
- Family Nannodastiidae Papp, 1980
- Family Natalimyzidae Barraclough & McAlpine, 2006
- Family Nemestrinidae Griffith & Pidgeon, 1832
- Family Neminidae McAlpine, 1983
- Family Neriidae Westwood, 1840
- Family Neurochaetidae McAlpine, 1978
- Family Nothybidae Frey, 1927
- Family Nycteribiidae Samouelle, 1819
- Family Nymphomyiidae Tokunaga, 1932
- Family Ocoidae accepted as Evocoidae Yeates, Irwin & Wiegmann, 2006
- Family Odiniidae Hendel, 1920
- Family Oestridae Leach, 1815
- Family Oligophryneidae Rohdendorf, 1962 † accepted as Anisopodidae Knab, 1912
- Family Oligophrynidae Rohdendorf, 1962 † accepted as Anisopodidae Knab, 1912
- Family Opetiidae Rondani, 1856
- Family Opomyzidae Fallén, 1820
- Family Oreoleptidae Zloty, Sinclair & Pritchard, 2005
- Family Orientisargidae Zhang, 2012 †
- Family Ortalidae Fallén, 1810 accepted as Ulidiidae Macquart, 1835
- Family Otitidae Aldrich, 1932 accepted as Ulidiidae Macquart, 1835
- Family Pachyneuridae Schiner, 1864
- Family Palaeolimnobiidae Zhang, Zhang, Liu & Shangguan, 1986 † accepted as Pediciidae Osten Sacken, 1860
- Family Palaeophoridae Rohdendorf, 1951 †
- Family Palaeopleciidae Rohdendorf, 1962 †
- Family Palaeostratiomyiidae Rohdendorf, 1938 † accepted as Rhagionidae Latreille, 1802
- Family Pallopteridae Loew, 1862
- Family Panthophthalmidae accepted as Pantophthalmidae Bigot, 1882
- Family Pantophthalmidae Bigot, 1882
- Family Parapleciidae Hong, 1983 † accepted as Paraxymyiidae Rohdendorf, 1946 †
- Family Paratendipedidae Hong & Wang, 1990 † accepted as Serendipidae Evenhuis, 1994 †
- Family Paraxymyiidae Rohdendorf, 1946 †
- Family Pediciidae Osten Sacken, 1860
- Family Pelecorhynchidae Enderlein, 1922
- Family Periscelidae accepted as Periscelididae Oldenberg, 1914
- Family Periscelididae Oldenberg, 1914
- Family Perissomatidae Colless, 1962 accepted as Perissommatidae Colless, 1962
- Family Perissommatidae Colless, 1962
- Family Phaeomyiidae Verbeke, 1950
- Family Phasiidae Robineau-Desvoidy, 1830 accepted as Tabanidae Latreille, 1802
- Family Phlebotomidae accepted as Psychodidae Newman, 1834
- Family Phoridae Curtis, 1833
- Family Phragmoligoneuridae Rohdendorf, 1962 † accepted as Protopleciidae Rohdendorf, 1946 †
- Family Piophilidae Macquart, 1835
- Family Pipunculidae Walker, 1834
- Family Platypezidae Fallén, 1815
- Family Platystomatidae Schiner, 1862
- Family Pleciidae Duda, 1930 accepted as Bibionidae Fleming, 1821
- Family Pleciodictyidae Rohdendorf, 1962 † accepted as Protopleciidae Rohdendorf, 1946 †
- Family Pleciofungivoridae Rohdendorf, 1946 †
- Family Pleciomimidae Rohdendorf, 1946 † accepted as Antefungivoridae Rohdendorf, 1938 †
- Family Polleniidae Brauer & Bergenstamm, 1889
- Family Procramptonomyiidae Kovalev, 1985 †
- Family Proneottiophilidae Hennig, 1969 †
- Family Protapioceridae Ren, 1998 †
- Family Protempididae Ussatchov, 1968 †
- Family Protendipedidae Rohdendorf, 1962 †
- Family Protobibionidae Rohdendorf, 1946 †
- Family Protobrachyceridae Rohdendorf, 1962 †
- Family Protobrachycerontidae † accepted as Protobrachyceridae Rohdendorf, 1962 †
- Family Protoligoneuridae Rohdendorf, 1962 † accepted as Protopleciidae Rohdendorf, 1946 †
- Family Protomphralidae Rohdendorf, 1962 †
- Family Protopleciidae Rohdendorf, 1946 †
- Family Protorhyphidae Handlirsch, 1906 †
- Family Protoscatopsidae Rohdendorf, 1946 †
- Family Pseudopomyzidae McAlpine, 1966
- Family Psilidae Macquart, 1835
- Family Psychodidae Newman, 1834
- Family Psychodoidea incertae sedis
- Family Ptychopteridae Osten Sacken, 1862
- Family Pyrgotidae Schiner, 1868
- Family Rangomaramidae Jaschhof & Didham, 2002
- Family Rhaetomyiidae Rohdendorf, 1962 †
- Family Rhagionemestriidae Ussatchov, 1968 †
- Family Rhagionempididae Rohdendorf, 1951 †
- Family Rhagionidae Latreille, 1802
- Family Rhiniidae Brauer & Bergenstamm, 1889
- Family Rhinophoridae Robineau-Desvoidy, 1863
- Family Rhinotoridae Williston, 1896 accepted as Heleomyzidae Westwood, 1840
- Family Rhopalomeridae accepted as Ropalomeridae Schiner, 1868
- Family Rhyphidae Newman, 1834 accepted as Anisopodidae Knab, 1912
- Family Richardidae accepted as Richardiidae Loew, 1868
- Family Richardiidae Loew, 1868
- Family Ropalomeridae Schiner, 1868
- Family Sapromyzidae accepted as Lauxaniidae Macquart, 1835
- Family Sarcophagidae Macquart, 1834
- Family Scathophagidae Cresson, 1918
- Family Scatophagidae Robineau-Desvoidy, 1830 accepted as Scathophagidae Cresson, 1918
- Family Scatopsidae Newman, 1834
- Family Scenopinidae Fallén, 1817
- Family Sciadoceridae Schmitz, 1929
- Family Sciaridae Billberg, 1820
- Family Sciaroidea incertae sedis
- Family Sciomyzidae Fallén, 1820
- Family Sepsidae Walker, 1833
- Family Serendipidae Evenhuis, 1994 †
- Family Siberhyphidae †
- Family Simuliidae Newman, 1834
- Family Sinotendipedidae † accepted as Anisopodidae Knab, 1912
- Family Somatiidae Hendel, 1935
- Family Spaniidae Rondani, 1856 accepted as Rhagionidae Latreille, 1802
- Family Sphaeoroceridae accepted as Sphaeroceridae Macquart, 1835
- Family Sphaeroceridae Macquart, 1835
- Family Stenomicridae Papp, 1984 accepted as Periscelididae Oldenberg, 1914
- Family Stratiomyidae Latreille, 1802
- Family Streblidae Kolenati, 1863
- Family Stronglyophthalmyiidae accepted as Strongylophthalmyiidae Hendel, 1917
- Family Strongylophthalmyiidae Hendel, 1917
- Family Synneuridae Enderlein, 1936 accepted as Canthyloscelidae Shannon, 1927
- Family Syringogastridae Prado, 1969
- Family Syrphidae Latreille, 1802
- Family Tabanidae Latreille, 1802
- Family Tachinidae Bigot, 1853
- Genus Abepalpus Townsend, 1931
- Genus Abolodoria Townsend, 1934
- Genus Acantholespesia Wood, 1987
- Genus Acaulona van der Wulp, 1888
- Genus Acemeigenia Townsend, 1927 accepted as Vibrissina Rondani, 1861
- Genus Acemya Robineau-Desvoidy, 1830
- Genus Acemyia Lioy, 1864 accepted as Acemyia Schiner, 1861
- Genus Acemyia Schiner, 1861 accepted as Acemya Robineau-Desvoidy, 1830
- Genus Acemyiopsis Townsend, 1915 accepted as Ceracia Rondani, 1865
- Genus Acephana Townsend, 1916 accepted as Anagonia Brauer & Bergenstamm, 1891
- Genus Achaetoneura Brauer & Bergenstamm, 1891
- Genus Achaetoneuropsis Townsend, 1927 accepted as Lespesia Robineau-Desvoidy, 1863
- Genus Acomyia Agassiz, 1846 accepted as Acemya Robineau-Desvoidy, 1830
- Genus Acroceronia Cortés, 1951
- Genus Acroglossa Williston in Scudder, 1889
- Genus Acromiodexia Townsend, 1931 accepted as Cholomyia Bigot, 1884
- Genus Acronacantha Wulp, 1891
- Genus Acronarista Townsend, 1908 accepted as Neaera Robineau-Desvoidy, 1830
- Genus Acronaristopsis Townsend, 1919 accepted as Neaera Robineau-Desvoidy, 1830
- Genus Actia Robineau-Desvoidy, 1830
- Genus Actia Meigen, 1838 accepted as Actia Robineau-Desvoidy, 1830
- Genus Actinactia Townsend, 1927 accepted as Ceromya Robineau-Desvoidy, 1830
- Genus Actinochaeta Brauer & Bergenstamm, 1889
- Genus Actinochaetopsis Townsend, 1934 accepted as Actinochaeta Brauer & Bergenstamm, 1889
- Genus Actinochaetopteryx Townsend, 1927
- Genus Actinocrocuta Townsend, 1935 accepted as Siphona Meigen, 1803
- Genus Actinodoria Townsend, 1927
- Genus Actinominthella Townsend, 1928
- Genus Actinomintho Townsend, 1928 accepted as Polygaster Van der Wulp, 1890
- Genus Actinophryno Townsend, 1928 accepted as Lixophaga Townsend, 1908
- Genus Actinoplagia Blanchard, 1940
- Genus Actinoprosopa Townsend, 1927 accepted as Houghia Coquillett, 1897
- Genus Actinotachina Townsend, 1927 accepted as Lixophaga Townsend, 1908
- Genus Actiopsis Townsend, 1917 accepted as Actia Robineau-Desvoidy, 1830
- Genus Acucera Malloch, 1930
- Genus Acuphocera Townsend, 1926 accepted as Cuphocera Macquart, 1845
- Genus Acuphoceropsis Blanchard, 1943
- Genus Adejeania Townsend, 1913
- Genus Adenia Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Adenia Robineau-Desvoidy, 1863 [b] accepted as Arenia Robineau-Desvoidy, 1863
- Genus Adercomyia Arnaud, 1963
- Genus Adidyma Townsend, 1935
- Genus Admontia Brauer & Bergenstamm, 1889
- Genus Admontiopsis Townsend, 1915 accepted as Admontia Brauer & Bergenstamm, 1889
- Genus Adoryphorophaga Townsend, 1931 accepted as Myiopharus Brauer & Bergenstamm, 1890
- Genus Aeglops Aldrich, 1934
- Genus Aeolofrontina Townsend, 1928 accepted as Plagimasicera Townsend, 1915
- Genus Aesia Richter, 2011
- Genus Aetylia Robineau-Desvoidy, 1863 accepted as Phebellia Robineau-Desvoidy, 1846
- Genus Afrella Robineau-Desvoidy in Blainville et al., 1826 accepted as Afrellia Robineau-Desvoidy, 1863
- Genus Afrellia Robineau-Desvoidy, 1863
- Genus Africodexia Townsend, 1933 accepted as Dinera Robineau-Desvoidy, 1830
- Genus Afrolixa Curran, 1939
- Genus Afromeigenia Curran, 1927
- Genus Afrophasia Curran, 1939
- Genus Afroplagia Curran, 1938
- Genus Afrosturmia Curran, 1927
- Genus Afrovoria
- Genus Afzelia Robineau-Desvoidy, 1863
- Genus Agathomyia Reinhard, 1959
- Genus Agculocera Macquart, 1855 accepted as Acemya Robineau-Desvoidy, 1830
- Genus Agicuphocera Townsend, 1915
- Genus Aglummyia Townsend, 1912
- Genus Agrarialia Curran, 1934
- Genus Ahrensia Robineau-Desvoidy, 1863 accepted as Microsoma Macquart, 1855
- Genus Akosempomyia Villeneuve, 1932
- Genus Alaskophyto Townsend, 1915 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Albertia Rondani, 1843 accepted as Rhamphina Macquart, 1835
- Genus Albinia Robineau-Desvoidy, 1830
- Genus Albunia Macquart, 1835 accepted as Albinia Robineau-Desvoidy, 1830
- Genus Aldrichocyptera Townsend, 1936 accepted as Cylindromyia Meigen, 1803
- Genus Aldrichomyia Özdikmen, 2006
- Genus Alexogloblinia Cortes, 1944
- Genus Alitophasia Townsend, 1934 accepted as Catharosia Rondani, 1868
- Genus Allelomyia González, 1992
- Genus Allophora Mik, 1894 accepted as Alophora Robineau-Desvoidy, 1830
- Genus Allophorocera Hendel, 1901
- Genus Alloprosopaea Villeneuve, 1922
- Genus Allosturmia Blanchard, 1958
- Genus Allothelaira Villeneuve, 1915
- Genus Almugmyia Townsend, 1911 accepted as Microchaetina Van der Wulp, 1891
- Genus Alocatissa Hendel, 1930
- Genus Alophora Robineau-Desvoidy, 1830 accepted as Phasia Latreille, 1804
- Genus Alophorella Townsend, 1912 accepted as Phasia Latreille, 1804
- Genus Alophorellopsis Townsend, 1927 accepted as Phasia Latreille, 1804
- Genus Alophorophasia Townsend, 1927 accepted as Phasia Latreille, 1804
- Genus Alophoropsis Townsend, 1915 accepted as Phasia Latreille, 1804
- Genus Alpinoplagia Townsend, 1931
- Genus Alsomyia Brauer & Bergenstamm, 1891
- Genus Alsopsyche Brauer & Bergenstamm, 1891
- Genus Altaia Malloch, 1938
- Genus Amazohoughia Townsend, 1934
- Genus Amazonella Myers, 1934 accepted as Metagonistylum Townsend, 1927
- Genus Amblychaeta Aldrich, 1934
- Genus Ambychaeta
- Genus Amedea Robineau-Desvoidy, 1830
- Genus Amelibaea Mesnil in Lindner, 1956
- Genus Ameniamima Crosskey, 1973
- Genus Amesia Robineau-Desvoidy, 1863 accepted as Microphthalma Macquart, 1843
- Genus Amesioclea Villeneuve, 1936
- Genus Amesiomima
- Genus Ametadoria Townsend, 1927
- Genus Amicrotrichomma Townsend, 1927
- Genus Amnonia Kugler, 1971
- Genus Amphibola accepted as Amphibolia Macquart, 1843
- Genus Amphibolia Macquart, 1843
- Genus Amphiboliopsis Townsend, 1926 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Amphicestonia Villeneuve, 1939
- Genus Amphisa Robineau-Desvoidy, 1863 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Amphitropesa Townsend, 1933
- Genus Amplipila Curran, 1927
- Genus Amyclaea Robineau-Desvoidy, 1863 accepted as Dinera Robineau-Desvoidy, 1830
- Genus Anacamptomyia Bischoff, 1904
- Genus Anachaetopsis Brauer & Bergenstamm, 1889
- Genus Anacomptomyia Curran, 1927 accepted as Anacamptomyia Bischoff, 1904
- Genus Anadiscalia Curran, 1934
- Genus Anadistichona Townsend, 1934
- Genus Anaeudora Townsend, 1933
- Genus Anagonia Brauer & Bergenstamm, 1891
- Genus Anamastax Brauer & Bergenstamm, 1891
- Genus Anameriania Zimin, 1960
- Genus Anametopochaeta Townsend, 1919
- Genus Anantha Rondani, 1861 accepted as Ananta Meigen, 1838
- Genus Anapatica Richter, 2001
- Genus Anaperistommyia Townsend, 1926 accepted as Halydaia Egger, 1856
- Genus Anaphorinia Townsend, 1927 accepted as Leptostylum Macquart, 1851
- Genus Anaporia Townsend, 1919 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Anastellorhina Bigot, 1885 accepted as Apatemyia Macquart, 1846
- Genus Anatropomyia Malloch, 1930
- Genus Anazygosturmia Townsend, 1927 accepted as Drino Robineau-Desvoidy, 1863
- Genus Ancistrophora Schiner, 1865
- Genus Ancylocera Mik, 1866 accepted as Agculocera Macquart, 1855
- Genus Ancylogaster Bigot, 1884 accepted as Hemyda Robineau-Desvoidy, 1830
- Genus Andesimyia Brèthes, 1909
- Genus Andicesa Koçak & Kemal, 2010
- Genus Andinomyia Townsend, 1912
- Genus Andrina Robineau-Desvoidy, 1863 accepted as Periscepsia Gistl, 1848
- Genus Andrina Lioy, 1864 accepted as Andrina Robineau-Desvoidy, 1863
- Genus Androcyptera Townsend, 1927 accepted as Cylindromyia Meigen, 1803
- Genus Androeuryops Beneway, 1961
- Genus Androphana Brauer & Bergenstamm, 1889
- Genus Androsoma
- Genus Anechuromyia Mesnil & Shima, 1979
- Genus Anemia Verrall in Scudder, 1882 accepted as Anemya Robineau-Desvoidy, 1863
- Genus Anemorilla Townsend, 1915
- Genus Anemya Robineau-Desvoidy, 1863
- Genus Anemyia Verrall in Scudder, 1882 accepted as Anemya Robineau-Desvoidy, 1863
- Genus Aneogmena Brauer & Bergenstamm, 1891
- Genus Anepalpus Townsend, 1931
- Genus Anepsia Gistl, 1848 accepted as Wahlbergia Zetterstedt, 1842
- Genus Anetia Robineau-Desvoidy, 1863
- Genus Angiorhina Brauer & Bergenstamm, 1889
- Genus Angustia Sellers, 1943
- Genus Angustiopsis Reinhard, 1959
- Genus Anhangabahuia Townsend, 1931 accepted as Houghia Coquillett, 1897
- Genus Anisia Wulp, 1890
- Genus Anna Malloch, 1926
- Genus Anomalostomyia Cerretti & Barraclough, 2007
- Genus Anoxycampta Bigot, 1881 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Anoxynops Townsend, 1927
- Genus Anoxynopsella Townsend, 1935 accepted as Myiopharus Brauer & Bergenstamm, 1890
- Genus Anoxynopsoidea Thompson, 1968 accepted as Leptostylum Macquart, 1851
- Genus Anoxynopsoides Thompson, 1968 accepted as Leptostylum Macquart, 1851
- Genus Anthoeca Bezzi, 1906 accepted as Anthoica Rondani, 1861
- Genus Anthoica Rondani, 1861 accepted as Solieria Robineau-Desvoidy, 1849
- Genus Anthomyiopsis Townsend, 1916
- Genus Antilicolla
- Genus Antillicolla Curran, 1927
- Genus Antistasea Bischof, 1904
- Genus Antistaseopsis Townsend, 1934
- Genus Anurogyna Brauer & Bergenstamm, 1889
- Genus Anurophylla Villeneuve, 1938
- Genus Anurophyllina Mesnil in Lindner, 1961 accepted as Anurophyllina Mesnil, 1977
- Genus Anurophyllina Mesnil, 1977 accepted as Prosopofrontina Townsend, 1926
- Genus Anzamyia Reinhard, 1960
- Genus Apachemyia Townsend, 1908 accepted as Solieria Robineau-Desvoidy, 1849
- Genus Apacheprospherysa Townsend, 1926 accepted as Myiopharus Brauer & Bergenstamm, 1890
- Genus Apalpostoma Malloch, 1930
- Genus Apalpus Malloch, 1929
- Genus Apatemyia Macquart, 1846
- Genus Aphantorhapha Townsend, 1919
- Genus Aphantorhaphopsis Townsend, 1926
- Genus Aphelogaster Aldrich, 1934
- Genus Apheloglutus
- Genus Aphria Robineau-Desvoidy, 1830
- Genus Aphrimyobia Townsend, 1926 accepted as Atylostoma Brauer & Bergenstamm, 1889
- Genus Aphriophyria
- Genus Aphriosphyria Townsend, 1927 accepted as Peleteria Robineau-Desvoidy, 1830
- Genus Aphriosphyriopsis Blanchard, 1943
- Genus Aphyrosphyria Townsend, 1927 accepted as Aphriosphyria Townsend, 1927
- Genus Apilia Malloch, 1930
- Genus Apinocyptera Townsend, 1915 accepted as Cylindromyia Meigen, 1803
- Genus Apinops Coquillett, 1897
- Genus Aplomya Robineau-Desvoidy, 1830
- Genus Aplomyia Agassiz, 1846 accepted as Aplomya Robineau-Desvoidy, 1830
- Genus Aplomyiopsis Villeneuve, 1933
- Genus Aplomyodoria Townsend, 1928
- Genus Aplomyopsis Townsend, 1927
- Genus Apomorphomyia Crosskey, 1984
- Genus Aporia Macquart, 1846 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Aporomya Rondani, 1859 accepted as Lypha Robineau-Desvoidy, 1830
- Genus Aporomyia Schiner, 1868 accepted as Aporomya Rondani, 1859
- Genus Aporotachina Meade, 1894
- Genus Apostrophus Loew in Meigen, 1871
- Genus Apostrophusia Townsend, 1932 accepted as Besseria Robineau-Desvoidy, 1830
- Genus Appendicia Stein, 1924
- Genus Aprotheca Macquart, 1851
- Genus Arama Rikhter, 1972
- Genus Araucogonia
- Genus Araucosimus Aldrich, 1934
- Genus Aravaipa Townsend, 1919 accepted as Distichona Van der Wulp, 1890
- Genus Archiclops Bischof, 1900
- Genus Archinactia Townsend, 1927 accepted as Arrhinactia Townsend, 1927
- Genus Archiphania van Emden, 1945
- Genus Archynemochaeta Blanchard, 1941
- Genus Archytas Jaennicke, 1867
- Genus Archytodejeania Blanchard, 1941
- Genus Archytoepalpus Townsend, 1927
- Genus Arcona Richter, 1988
- Genus Arctophyto Townsend, 1915 accepted as Ateloglossa Coquillett, 1899
- Genus Arctosoma Aldrich, 1934
- Genus Arenia Robineau-Desvoidy, 1863 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Arge Robineau-Desvoidy, 1863 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Argentoepalpus Townsend, 1919 accepted as Epalpus Rondani, 1850
- Genus Argyreomyia Townsend, 1915 accepted as Leptostylum Macquart, 1851
- Genus Argyrochaetona Townsend, 1919
- Genus Argyrodoria Townsend, 1927 accepted as Myiopharus Brauer & Bergenstamm, 1890
- Genus Argyromima Brauer & Bergenstamm, 1889
- Genus Argyrophylacoides Townsend, 1932 accepted as Cadurcia Villeneuve, 1926
- Genus Argyrophylax Brauer & Bergenstamm, 1889
- Genus Argyrothelaira Townsend, 1916
- Genus Aria Robineau-Desvoidy, 1830
- Genus Aridalia Curran, 1934
- Genus Arisbaea Robineau-Desvoidy, 1863 accepted as Stomina Robineau-Desvoidy, 1830
- Genus Arisbea Robineau-Desvoidy, 1863 accepted as Arisbaea Robineau-Desvoidy, 1863
- Genus Arraltia Robineau-Desvoidy, 1863 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Arrhenomyza Malloch, 1929
- Genus Arrhinactia Townsend, 1927
- Genus Arrhinodexia Townsend, 1927 accepted as Uromedina Townsend, 1926
- Genus Arrhinomyia Brauer & Bergenstamm, 1890
- Genus Arthrochaeta Brauer & Bergenstamm, 1889
- Genus Arthuria Malloch, 1938 accepted as Montanarturia Miller, 1945
- Genus Asbella Robineau-Desvoidy, 1863 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Asbellopsis Townsend, 1928 accepted as Dexia Meigen, 1826
- Genus Asboleola Villeneuve, 1916
- Genus Asetulia Malloch, 1938
- Genus Ashmeadia Howard, 1889 accepted as Rileya Brauer & Bergenstamm, 1893
- Genus Asilidotachina Townsend, 1931
- Genus Asiocarcelia Baranov, 1934
- Genus Asiogonia Rohdendorf, 1928
- Genus Asiphona Mesnil, 1954
- Genus Asseclamyia Reinhard, 1956
- Genus Atacta Schiner, 1868
- Genus Atactomima Townsend, 1916 accepted as Atacta Schiner, 1868
- Genus Atactopsis Townsend, 1917
- Genus Atactosturmia Townsend, 1915
- Genus Ateloglossa Coquillett, 1899
- Genus Ateloglutus Aldrich, 1934
- Genus Atelogossa Coquillett, 1899
- Genus Ateria Robineau-Desvoidy, 1863 accepted as Periscepsia Gistl, 1848
- Genus Athricia Macquart, 1834
- Genus Athrycia Robineau-Desvoidy, 1830
- Genus Athryciopsis Townsend, 1932 accepted as Athrycia Robineau-Desvoidy, 1830
- Genus Atilia Robineau-Desvoidy, 1863
- Genus Atissella
- Genus Atissiella Cresson, 1918
- Genus Atlantomyia Crosskey, 1977
- Genus Atractocerops Townsend, 1916
- Genus Atractochaeta Brauer & Bergenstamm, 1889
- Genus Atractodexia Bigot, 1885 accepted as Sumpigaster Macquart, 1855
- Genus Atractogonia Townsend, 1932 accepted as Germaria Robineau-Desvoidy, 1830
- Genus Atractouclesia Townsend, 1931 accepted as Uclesia Girschner, 1901
- Genus Atrania Robineau-Desvoidy, 1863 accepted as Wagneria Robineau-Desvoidy, 1830
- Genus Atrichiopoda Townsend, 1931
- Genus Atropharista Townsend, 1892 accepted as Melanophrys Williston, 1886
- Genus Atrophopalpus Townsend, 1892 accepted as Paradidyma Brauer & Bergenstamm, 1891
- Genus Atrophopoda Townsend, 1891 accepted as Paradidyma Brauer & Bergenstamm, 1891
- Genus Atylomyia Brauer, 1898
- Genus Atylostoma Brauer & Bergenstamm, 1889
- Genus Auacephala
- Genus Aubaea Robineau-Desvoidy, 1863a
- Genus Aubaea Robineau-Desvoidy, 1863b accepted as Cylindromyia Meigen, 1803
- Genus Aubaeanetia Townsend, 1919 accepted as Oswaldia Robineau-Desvoidy, 1863
- Genus Aubaeina Enderlein, 1937
- Genus Aulacephala Macquart, 1851
- Genus Aulacocephala Gerstaecker, 1863
- Genus Aulacocephalopsis Townsend, 1919 accepted as Aulacephala Macquart, 1851
- Genus Aulicomyia Reinhard, 1943
- Genus Austeniops Townsend, 1915
- Genus Australotachina Curran, 1938
- Genus Austrodexia Malloch, 1930
- Genus Austrolydella Townsend, 1919 accepted as Myiopharus Brauer & Bergenstamm, 1890
- Genus Austromacquartia Townsend, 1934
- Genus Austromaquartia
- Genus Austronilea Crosskey, 1967
- Genus Austrophasia Townsend, 1916 accepted as Phasia Latreille, 1804
- Genus Austrophasiopsis Townsend, 1932
- Genus Austrophorocera Townsend, 1916
- Genus Austrophryno Townsend, 1916
- Genus Austrophytomyptera Blanchard, 1962
- Genus Austrostaurochaeta Townsend, 1931 accepted as Admontia Brauer & Bergenstamm, 1889
- Genus Avernia Rondani, 1857 accepted as Zophomyia Macquart, 1835
- Genus Avibrissia Malloch, 1932
- Genus Avibrissina Malloch, 1932
- Genus Avibrissosturmia Townsend, 1927
- Genus Azulihoughia Townsend, 1934 accepted as Calocarcelia Townsend, 1927
- Genus Azygobothria Townsend, 1911
- Genus Bactromyia Brauer & Bergenstamm, 1891
- Genus Bactromyiella Mesnil in Lindner, 1952
- Genus Baculocaptus
- Genus Baeomyia O'Hara, 1984
- Genus Bahrettinia Özdikmen, 2007
- Genus Balde Rice, 2005
- Genus Ballardia Curran, 1927
- Genus Bampura Tschorsnig, 1983
- Genus Baromyia Reinhard, 1957
- Genus Barychaeta Bezzi, 1906
- Genus Barydexia Townsend, 1928 accepted as Dexia Meigen, 1826
- Genus Bathydexia Wulp, 1891
- Genus Bathytheresia Townsend, 1928 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Baumauheria Rondani, 1861 accepted as Baumhaueria Meigen, 1838
- Genus Baumhaueria Meigen, 1838
- Genus Bavaria Brauer & Bergenstamm, 1889
- Genus Bavariella Belanovskiki, 1931
- Genus Bayerella Jacentkovskaky, 1941
- Genus Bebricia Robineau-Desvoidy, 1863 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Belida Robineau-Desvoidy, 1863
- Genus Bellina Robineau-Desvoidy, 1863
- Genus Belohystriomyia Zimin, 1935
- Genus Belosiomima
- Genus Belosiphonomyia Zimin, 1935
- Genus Belvoisia Loew, 1867 accepted as Belvosia Robineau-Desvoidy, 1830
- Genus Belvosia Robineau-Desvoidy, 1830
- Genus Belvosiella Curran, 1934
- Genus Belvosiomima Townsend, 1915 accepted as Belvosia Robineau-Desvoidy, 1830
- Genus Belvosiomimops Townsend, 1935
- Genus Belvosiopsis Townsend, 1927 accepted as Belvosia Robineau-Desvoidy, 1830
- Genus Benigramma Lehrer, 2013 accepted as Thelairosoma Villeneuve, 1916
- Genus Beraldia Robineau-Desvoidy, 1863
- Genus Beskia Brauer & Bergenstamm, 1889
- Genus Beskiocephala Townsend, 1916
- Genus Beskioleskia Townsend, 1919
- Genus Bessa Robineau-Desvoidy, 1863
- Genus Besseria Robineau-Desvoidy, 1830
- Genus Besserioides Curran, 1938
- Genus Bezziomyiobia Baranov, 1938
- Genus Bibiomima Brauer & Bergenstamm, 1889
- Genus Bicruciosturmia Townsend, 1932 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Bigonichaeta Schiner, 1864 accepted as Bigonicheta Rondani, 1845
- Genus Bigonicheta Rondani, 1845 accepted as Triarthria Stephens, 1829
- Genus Bigotia Robineau-Desvoidy, 1863
- Genus Billaea Robineau-Desvoidy, 1830
- Genus Billea Rondani, 1862 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Binghamimyia Townsend, 1919
- Genus Biohypostena Townsend, 1927 accepted as Lixophaga Townsend, 1908
- Genus Biomeigenia Mesnil in Lindner, 1961
- Genus Biomya Rondani, 1856 accepted as Zaira Robineau-Desvoidy, 1830
- Genus Biomyia Coquillet, 1897 accepted as Biomya Rondani, 1856
- Genus Biomyia Schiner, 1868 accepted as Biomya Rondani, 1856
- Genus Biomyopsis Townsend, 1927 accepted as Exorista Meigen, 1803
- Genus Bischofimyia Townsend, 1927
- Genus Bithia Robineau-Desvoidy, 1863
- Genus Blepharella Macquart, 1851
- Genus Blepharellina Mesnil in Lindner, 1952
- Genus Blephariatacta Townsend, 1931
- Genus Blepharidea Rondani, 1856 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Blepharidopsis Brauer & Bergenstamm, 1891
- Genus Blepharigena Rondani, 1856 accepted as Athrycia Robineau-Desvoidy, 1830
- Genus Blepharipa Rondani, 1856
- Genus Blepharipeza Macquart, 1843
- Genus Blepharipoda Brauer & Bergenstamm, 1889
- Genus Blepharomyia Brauer & Bergenstamm, 1889
- Genus Blepharopeza Agassiz, 1846
- Genus Blepharopoda Rondani in Osculati, 1850
- Genus Blepharopoda Oldenberg, 1904 accepted as Blepharipoda Brauer & Bergenstamm, 1889
- Genus Blondelia Robineau-Desvoidy, 1830
- Genus Blumia Robineau-Desvoidy, 1863 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Bogosia Rondani, 1873
- Genus Bogosiella Villeneuve, 1923
- Genus Bohemania Robineau-Desvoidy, 1863 accepted as Uromyia Meigen, 1838
- Genus Bohemannia Bezzi in Becker-Kertész, 1907 accepted as Bohemania Robineau-Desvoidy, 1863
- Genus Bolbochaeta Carus, 1885
- Genus Bolbocheta Bigot, 1885
- Genus Bolodoria Townsend, 1927 accepted as Myiopharus Brauer & Bergenstamm, 1890
- Genus Bolohoughia Townsend, 1927 accepted as Houghia Coquillett, 1897
- Genus Bolomyia Brauer & Bergenstamm, 1891
- Genus Bombyliojeania Townsend, 1931 accepted as Eudejeania Townsend, 1912
- Genus Bombyliomyia Brauer & Bergenstamm, 1889
- Genus Bombyliopsis Townsend, 1915 accepted as Hystricia Macquart, 1843
- Genus Bonannia Rondani, 1861 accepted as Tryphera Meigen, 1838
- Genus Bonellia Robineau-Desvoidy, 1830 accepted as Bonellimyia Townsend, 1919
- Genus Bonellimyia Townsend, 1919 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Bonetia Schiner, 1868 accepted as Bonnetia Robineau-Desvoidy, 1830
- Genus Bonnania Lioy, 1864 accepted as Bonannia Rondani, 1861
- Genus Bonnaniops Townsend, 1935
- Genus Bonnellia Schiner, 1868 accepted as Bonellia Robineau-Desvoidy, 1830
- Genus Bonnetia Robineau-Desvoidy, 1830 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Borgmeiermyia Townsend, 1935
- Genus Boromyia Mesnil, 1957
- Genus Bothria Rondani, 1856 accepted as Botria Rondani, 1856
- Genus Bothrophora Schiner, 1868
- Genus Bothrostira Enderlein, 1936
- Genus Botria Rondani, 1856
- Genus Botriopsis Townsend, 1928
- Genus Bourquinia
- Genus Brachelia Robineau-Desvoidy, 1830
- Genus Bracheliopsis Emden, 1960
- Genus Brachichaeta † accepted as Brachicheta Rondani, 1861
- Genus Brachicheta Rondani, 1861
- Genus Brachybelvosia Townsend, 1927
- Genus Brachychaeta Bezzi in Becker et al., 1907 accepted as Brachicheta Rondani, 1861
- Genus Brachychaeta Brauer & Bergenstamm, 1889 accepted as Brachicheta Rondani, 1861
- Genus Brachychaetoides Mesnil, 1970
- Genus Brachycnephalia Townsend, 1927
- Genus Brachycoelia Meade, 1892
- Genus Brachymasicera Townsend, 1911
- Genus Brachymera Brauer & Bergenstamm, 1889
- Genus Brachymeropsis Townsend, 1926 accepted as Atylostoma Brauer & Bergenstamm, 1889
- Genus Brachystylum Macquart, 1855
- Genus Bracteola Rikhter, 1972
- Genus Brasilomyia Özdikmen, 2010
- Genus Brauerimyia Townsend, 1908 accepted as Vanderwulpia Townsend, 1891
- Genus Braziliomyia Thompson, 1968
- Genus Bremia Robineau-Desvoidy, 1863
- Genus Brullaea Robineau-Desvoidy, 1863
- Genus Bucentes Latreille, 1809
- Genus Buquetia Robineau-Desvoidy, 1847
- Genus Byomyia Schiner, 1861 accepted as Biomya Rondani, 1856
- Genus Cacozelus Reinhard, 1943
- Genus Cadurcia Villeneuve, 1926
- Genus Cadurciella Villeneuve, 1927
- Genus Caeniopsis Townsend, 1927
- Genus Caenis Robineau-Desvoidy, 1863 accepted as Eurysthaea Robineau-Desvoidy, 1863
- Genus Caenisoma Townsend, 1927 accepted as Italispidea Townsend, 1927
- Genus Caenisomopsis Townsend, 1934
- Genus Cahenia Verbeke, 1960
- Genus Calcager Hutton, 1900
- Genus Calcageria Curran, 1927
- Genus Calirrhoe Meigen, 1800
- Genus Callesthes Aldrich, 1928
- Genus Calliethilla Shima, 1979
- Genus Callotroxis Aldrich, 1929
- Genus Calocarcelia Townsend, 1927
- Genus Calodexia Wulp, 1891
- Genus Calohystricia Townsend, 1931
- Genus Calolydella Townsend, 1927
- Genus Calopygidia Malloch, 1930
- Genus Calosia Malloch, 1938
- Genus Calotachina Malloch, 1938
- Genus Calothelaira Townsend, 1927 accepted as Calodexia Wulp, 1891
- Genus Calotheresia Townsend, 1926 accepted as Dexia Meigen, 1826
- Genus Calozenillia Townsend, 1927
- Genus Calpodomyia Townsend, 1915 accepted as Sphaerina Van der Wulp, 1890
- Genus Caltagironea Cortes & Campos, 1974
- Genus Calyptia Robineau-Desvoidy, 1863b accepted as Calyptidia Robineau-Desvoidy, 1863
- Genus Calyptidia Robineau-Desvoidy, 1863 accepted as Dufouria Robineau-Desvoidy, 1830
- Genus Calyptromyia Villeneuve, 1915
- Genus Calyptrosomus Reinhard, 1956
- Genus Camarona Wulp, 1891
- Genus Campbellia Miller, 1923
- Genus Campogaster Rondani, 1856 accepted as Microsoma Macquart, 1855
- Genus Camposiana Townsend, 1915
- Genus Camposodes Cortes, 1967
- Genus Camptophryno Townsend, 1927
- Genus Campylia Malloch, 1938
- Genus Campylochaeta Bezzi & Stein, 1907 accepted as Campylocheta Rondani, 1859
- Genus Campylocheta Rondani, 1859
- Genus Campylura Rondani, 1863 accepted as Campogaster Rondani, 1856
- Genus Canalia Curran, 1934
- Genus Canelomyia Reinhard, 1958
- Genus Cantrellius Barraclough, 1992
- Genus Caranthia Robineau-Desvoidy, 1850 accepted as Ceranthia Robineau-Desvoidy, 1830
- Genus Carbonaria Robineau-Desvoidy, 1863a accepted as Carbonia Robineau-Desvoidy, 1863
- Genus Carbonia Robineau-Desvoidy, 1863 accepted as Wagneria Robineau-Desvoidy, 1830
- Genus Carbonilla Mesnil, 1974
- Genus Carcelia Robineau-Desvoidy, 1830
- Genus Carceliella Baranov, 1934
- Genus Carcelimyia Mesnil in Lindner, 1944
- Genus Carcelina Mesnil in Lindner, 1944
- Genus Carceliocephala Townsend, 1934 accepted as Houghia Coquillett, 1897
- Genus Carceliodoria Townsend, 1928
- Genus Carceliopsis Townsend, 1927 accepted as Carcelia Robineau-Desvoidy, 1830
- Genus Carcelita Mesnil, 1977
- Genus Carcellia Rondani, 1859 accepted as Carcelia Robineau-Desvoidy, 1830
- Genus Cargilla Rikhter, 1980
- Genus Caricelia Mesnil, 1977
- Genus Carinosillus Reinhard, 1943
- Genus Carmodymyia Thompson, 1968
- Genus Cartocometes Aldrich, 1929
- Genus Casahuiria Townsend, 1919
- Genus Cassidocida Belanovsky, 1951 accepted as Labigastera Macquart, 1834
- Genus Catabucentes Villeneuve, 1934
- Genus Catacarcelia Townsend, 1927 accepted as Carcelia Robineau-Desvoidy, 1830
- Genus Catachaeta Brauer & Bergenstamm, 1891
- Genus Catagonia Brauer & Bergenstamm, 1891
- Genus Catagoniopsis Townsend, 1926 accepted as Patelloa Townsend, 1916
- Genus Catajurinia Townsend, 1927
- Genus Catalinovoria Townsend, 1926 accepted as Hypovoria Villeneuve, 1912
- Genus Catanemorilla Villeneuve, 1910
- Genus Catapariprosopa Townsend, 1927
- Genus Cataphorinia Townsend, 1927 accepted as Lixophaga Townsend, 1908
- Genus Cataphoriniopsis Thompson, 1968
- Genus Catemophrys Townsend, 1908 accepted as Vanderwulpia Townsend, 1891
- Genus Catena Rikhter, 1975 †
- Genus Catharosia Rondani, 1868
- Genus Catilia Robineau-Desvoidy, 1830
- Genus Catocyptera Townsend, 1927 accepted as Cylindromyia Meigen, 1803
- Genus Cavalieria Villeneuve, 1908
- Genus Cavillatrix Richter, 1986
- Genus Celatoria Coquillett, 1890
- Genus Celatoriopsis Blanchard, 1963
- Genus Celea Robineau-Desvoidy, 1863 accepted as Hubneria Robineau-Desvoidy, 1848
- Genus Celotrophus Reinhard, 1958
- Genus Cenosoma Wulp, 1890
- Genus Centeter Aldrich, 1923
- Genus Cephaloplagia Reinhard, 1964
- Genus Ceracia Rondani, 1865
- Genus Ceracya Rondani, 1868 accepted as Ceracia Rondani, 1865
- Genus Ceranthia Robineau-Desvoidy, 1830 accepted as Siphona Meigen, 1803
- Genus Ceratacia Bezzi, 1906 accepted as Ceracia Rondani, 1865
- Genus Ceratia Brauer & Bergenstamm, 1889 accepted as Ceracia Rondani, 1865
- Genus Ceratochaeta Brauer & Bergenstamm, 1889
- Genus Ceratochaetops Mesnil in Lindner, 1954 accepted as Ceratochaetops Mesnil, 1970
- Genus Ceratochaetops Mesnil, 1970
- Genus Ceratometopa Townsend, 1931
- Genus Ceratomyiella Townsend, 1891 accepted as Paradidyma Brauer & Bergenstamm, 1891
- Genus Cercomyia Brauer & Bergenstamm, 1889
- Genus Ceromasia Rondani, 1856
- Genus Ceromasiops Townsend, 1911 accepted as Ocytata Gistl, 1848
- Genus Ceromasiopsis Townsend, 1927
- Genus Ceromya Robineau-Desvoidy, 1830
- Genus Ceromyia Agassiz, 1846 accepted as Ceromya Robineau-Desvoidy, 1830
- Genus Cerophora Robineau-Desvoidy, 1863 accepted as Eloceria Robineau-Desvoidy, 1863
- Genus Cerosomyia Hutton, 1900
- Genus Cerotachina Arnaud, 1963
- Genus Cesamorelosia Koçak & Kemal, 2010
- Genus Cesapanama Koçak & Kemal, 2010
- Genus Cesaperua Koçak & Kemal, 2010
- Genus Cestonia Rondani, 1861
- Genus Cestonionerva Villeneuve, 1929
- Genus Cestonioptera
- Genus Chaetexorista Brauer & Bergenstamm, 1895
- Genus Chaetilya Bezzi in Becker-Kertész, 1907
- Genus Chaetina Bezzi & Stein, 1907 accepted as Chetina Rondani, 1856
- Genus Chaetinella Mesnil in Lindner, 1949
- Genus Chaetoandinomyia Vimmer & Soukup, 1940
- Genus Chaetocalirrhoe Townsend, 1935
- Genus Chaetocnephalia Townsend, 1915
- Genus Chaetocrania Townsend, 1915
- Genus Chaetocraniopsis Townsend, 1915
- Genus Chaetodemoticus Brauer & Bergenstamm, 1891
- Genus Chaetodexia Mesnil, 1976
- Genus Chaetodoria Townsend, 1927
- Genus Chaetoepalpus Vimmer & Soukup, 1940
- Genus Chaetogaedia Brauer & Bergenstamm, 1891
- Genus Chaetogaediopsis Townsend, 1916 accepted as Gaediopsis Brauer & Bergenstamm, 1891
- Genus Chaetogaster Macquart, 1851 accepted as Chetogaster Macquart, 1851
- Genus Chaetogastrina Malloch, 1929
- Genus Chaetogena Bezzi & Stein, 1907 accepted as Chetogena Rondani, 1856
- Genus Chaetoglossa Townsend, 1892
- Genus Chaetogyne Brauer & Bergenstamm, 1890
- Genus Chaetolixophaga Blanchard, 1940
- Genus Chaetolya Brauer & Bergenstamm, 1889 accepted as Chetylia Rondani, 1861
- Genus Chaetolydella Villeneuve, 1916
- Genus Chaetolyga Reinhard, 1931 accepted as Chaetolyga Brauer, 1880
- Genus Chaetolyga Brauer, 1880 accepted as Chetoliga Rondani, 1856
- Genus Chaetomera Brauer & Bergenstamm, 1890
- Genus Chaetomyiobia Brauer & Bergenstamm, 1895
- Genus Chaetona Van der Wulp, 1891
- Genus Chaetonalia Curran, 1934
- Genus Chaetonodexodes Townsend, 1916
- Genus Chaetonopsis Townsend, 1915
- Genus Chaetophathalmus
- Genus Chaetophleps Coquillett, 1895
- Genus Chaetophlepsis Townsend, 1915 accepted as Campylocheta Rondani, 1859
- Genus Chaetophorocera Townsend, 1912
- Genus Chaetophthalmus Brauer & Bergenstamm, 1891
- Genus Chaetoplagia Coquillett, 1895
- Genus Chaetopletha Malloch, 1938
- Genus Chaetoprocta Brauer & Bergenstamm, 1891
- Genus Chaetoprosopa Schiner, 1868 accepted as Choeteprosopa Macquart, 1851
- Genus Chaetoptilia Bezzi & Stein, 1907 accepted as Chetoptilia Rondani, 1862
- Genus Chaetoptiliopsis Baranov, 1938
- Genus Chaetoria Becker, 1908
- Genus Chaetosisyrops Townsend, 1912
- Genus Chaetostigmoptera Townsend, 1916
- Genus Chaetosturmia Villeneuve, 1915
- Genus Chaetotheresia Townsend, 1931
- Genus Chaetovoria Villeneuve, 1920
- Genus Chaetoxynops Townsend, 1928
- Genus Chaquimayoia Townsend, 1927 accepted as Lixophaga Townsend, 1908
- Genus Charapemyia Townsend, 1919 accepted as Trafoia Brauer & Bergenstamm, 1894
- Genus Charapozelia Townsend, 1927
- Genus Charasoma Reinhard, 1952
- Genus Chariclaea Robineau-Desvoidy, 1863 accepted as Chariclea Robineau-Desvoidy, 1863
- Genus Chariclea Robineau-Desvoidy, 1863 accepted as Botria Rondani, 1856
- Genus Charitella Mesnil, 1957
- Genus Chatolyga Bigot, 1892 accepted as Chetoliga Rondani, 1856
- Genus Chesippus Reinhard, 1967
- Genus Chetilia Rondani, 1859 accepted as Chetina Rondani, 1856
- Genus Chetilya Rondani, 1861 accepted as Chetylia Rondani, 1861
- Genus Chetina Rondani, 1856
- Genus Chetogaster Macquart, 1851
- Genus Chetogena Rondani, 1856
- Genus Chetoglossa
- Genus Chetoliga Rondani, 1856
- Genus Chetoljga Rondani, 1856 accepted as Chetoliga Rondani, 1856
- Genus Chetolyga Rondani, 1859
- Genus Chetoptilia Rondani, 1862
- Genus Chetoptylia Rondani, 1862 accepted as Chetoptilia Rondani, 1862
- Genus Chetylia Rondani, 1861 accepted as Chetina Rondani, 1856
- Genus Chetylya Rondani, 1861 accepted as Chetylia Rondani, 1861
- Genus Chiloclista Townsend, 1931
- Genus Chiloepalpus Townsend, 1927
- Genus Chiricahuia Townsend, 1918
- Genus Chlorodexia Townsend, 1916 accepted as Chlorotachina Townsend, 1915
- Genus Chlorogaster Macquart, 1851
- Genus Chlorogastrina Crosskey, 1967
- Genus Chlorogastropsis Townsend, 1926
- Genus Chlorohystricia Townsend, 1927
- Genus Chlorolydella Townsend, 1932
- Genus Chlorometaphyto Townsend, 1919 accepted as Gymnocheta Robineau-Desvoidy, 1830
- Genus Chloropales Mesnil in Lindner, 1950
- Genus Chlorophryno Townsend, 1932 accepted as Chlorolydella Townsend, 1932
- Genus Chlorotachina Townsend, 1915
- Genus Choeteprosopa Macquart, 1851
- Genus Cholomyia Bigot, 1884
- Genus Chorega Gistl, 1848 accepted as Melania Meigen, 1838
- Genus Chorezmia Zimin, 1928
- Genus Chorotegamyia Fleming & Wood in Fleming et al., 2020
- Genus Chremia Robineau-Desvoidy, 1863
- Genus Christophoria Brauer, 1893 accepted as Cristoforia Rondani, 1868
- Genus Chromatocera Townsend, 1915
- Genus Chromatophania Brauer & Bergenstamm, 1890
- Genus Chromoepalpus Townsend, 1914
- Genus Chryptopalpus Rondani, 1850 accepted as Cryptopalpus Rondani, 1850
- Genus Chryptospilosia
- Genus Chryseria Robineau-Desvoidy, 1863 accepted as Eliozeta Rondani, 1856
- Genus Chryserycia Mesnil, 1977
- Genus Chrysocosmius Bezzi, 1907
- Genus Chrysodoria Townsend, 1934 accepted as Chrysoexorista Townsend, 1915
- Genus Chrysoerigone Townsend, 1927 accepted as Chrysotachina Brauer & Bergenstamm, 1890
- Genus Chrysoexorista Townsend, 1915
- Genus Chrysohoughia Townsend, 1935 accepted as Houghia Coquillett, 1897
- Genus Chrysomasicera Townsend, 1915
- Genus Chrysometopiops Townsend, 1916
- Genus Chrysomikia Mesnil, 1970
- Genus Chrysopasta Brauer & Bergenstamm, 1890
- Genus Chrysophryno Townsend, 1927
- Genus Chrysophryxe Sellers, 1943
- Genus Chrysoprospherysa Townsend, 1928
- Genus Chrysopygia Townsend, 1932
- Genus Chrysorutilia Townsend, 1915
- Genus Chrysosoma Macquart, 1834 accepted as Chrysocosmius Bezzi, 1907
- Genus Chrysosomopsis Townsend, 1916
- Genus Chrysosturmia Townsend, 1916
- Genus Chrysotachina Brauer & Bergenstamm, 1890
- Genus Chrysotryphera Townsend, 1935
- Genus Chyuluella Emden, 1960
- Genus Ciala Rikhter, 1976
- Genus Cinochira Zetterstedt, 1845
- Genus Ciphocera Rondani, 1863 accepted as Cuphocera Macquart, 1845
- Genus Cistogaster Latreille in Cuvier, 1829
- Genus Clairvillia Robineau-Desvoidy, 1830
- Genus Clairvillia Schiner, 1862 accepted as Clairvillia Robineau-Desvoidy, 1830
- Genus Clairvilliops Mesnil, 1959
- Genus Clara Brauer & Bergenstamm, 1890
- Genus Clastoneura Aldrich, 1934
- Genus Clastoneuriopsis Reinhard, 1939
- Genus Clausicella Rondani, 1856
- Genus Clausicellana Curran, 1927
- Genus Clebia Gobert, 1887
- Genus Clelia Robineau-Desvoidy, 1830 accepted as Leucostoma Meigen, 1803
- Genus Clelimyia Herting, 1981
- Genus Clemelis Robineau-Desvoidy, 1863
- Genus Cleodora Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Cleonice Robineau-Desvoidy, 1863
- Genus Clinogaster Van der Wulp, 1892
- Genus Clista Meigen, 1838
- Genus Clistogaster Neuhaus, 1886 accepted as Cistogaster Latreille in Cuvier, 1829
- Genus Clistomorpha Townsend, 1892
- Genus Clistorrhinia Bezzi in Bezzi & Lamb, 1925
- Genus Clitiomya Rondani, 1862 accepted as Clytiomya Rondani, 1861
- Genus Clitogaster Neuhaus, 1886 accepted as Cistogaster Latreille in Cuvier, 1829
- Genus Cloacina Reinhard, 1945
- Genus Cloelia Agassiz, 1846 accepted as Clelia Robineau-Desvoidy, 1830
- Genus Clystogaster Neuhaus, 1886 accepted as Cistogaster Latreille in Cuvier, 1829
- Genus Clythopsis Townsend, 1927
- Genus Clythoxynops Townsend, 1927
- Genus Clytia Robineau-Desvoidy, 1830 accepted as Clytiomya Rondani, 1861
- Genus Clytiomya Rondani, 1861
- Genus Clytiomyia Rondani, 1862 accepted as Clytiomya Rondani, 1861
- Genus Clyto Macquart, 1835
- Genus Clyzia Lioy, 1865 accepted as Clytiomya Rondani, 1861
- Genus Cnephalia Rondani, 1856 accepted as Spallanzania Robineau-Desvoidy, 1830
- Genus Cnephaliodes Brauer & Bergenstamm, 1891
- Genus Cnephaliops Townsend, 1915
- Genus Cnephalodes Townsend, 1911
- Genus Cnephalodopsis Townsend, 1912
- Genus Cnephalogonia Townsend, 1916
- Genus Cnephalomyia Townsend, 1911
- Genus Cnephaotachina Brauer & Bergenstamm, 1894
- Genus Cnossia Robineau-Desvoidy, 1863 accepted as Hubneria Robineau-Desvoidy, 1848
- Genus Cochisemyia Reinhard, 1964
- Genus Cockerelliana Townsend, 1915
- Genus Coleophasia Townsend, 1931
- Genus Cololeskia Villeneuve, 1939
- Genus Coloradalia Curran, 1934
- Genus Coloradomyia Arnaud, 1963
- Genus Colurus Reinhard, 1953
- Genus Comatacta Coquillett, 1902
- Genus Comops Aldrich, 1934
- Genus Comopsis
- Genus Compsilura Bouché, 1834
- Genus Compsiluroides Mesnil, 1953
- Genus Compsoptesis Villeneuve, 1915
- Genus Comyops Van der Wulp, 1891
- Genus Comyopsis Townsend, 1919
- Genus Conactia Townsend, 1927
- Genus Conactiodoria Townsend, 1934
- Genus Congochrysosma
- Genus Congochrysosoma Townsend, 1916
- Genus Coniogaster Villeneuve, 1929 accepted as Conogaster Brauer & Bergenstamm, 1891
- Genus Conogaster Brauer & Bergenstamm, 1891
- Genus Conopisoma Speiser in Sjöstedt, 1910
- Genus Conopomima Mesnil, 1978
- Genus Conoptina Richter, 1995
- Genus Copecrypta Townsend, 1908
- Genus Coquillettina Walton, 1915
- Genus Coracomyia Aldrich, 1934
- Genus Cordillerodexia Townsend, 1927
- Genus Cordylidexia Giglio-Tos, 1894
- Genus Cordyligaster Macquart, 1843
- Genus Cordylogaster Agassiz, 1846 accepted as Cordyligaster Macquart, 1843
- Genus Coronimyia Townsend, 1892
- Genus Corozalia Curran, 1934
- Genus Corpulentoepalpus Townsend, 1927
- Genus Corpulentosoma Townsend, 1914
- Genus Corybantia Richter, 1986
- Genus Coscaronia Trojan, 1994
- Genus Cossidophaga Baranov, 1934
- Genus Cottila Gistl, 1848 accepted as Olivieria Robineau-Desvoidy, 1830
- Genus Cowania Reinhard, 1952
- Genus Crameria Robineau-Desvoidy, 1830 accepted as Trixa Meigen, 1824
- Genus Crapivnicia Richter, 1994
- Genus Craspedothrix Brauer & Bergenstamm, 1893
- Genus Craspedotrix Villeneuve, 1908 accepted as Craspedothrix Brauer & Bergenstamm, 1893
- Genus Crassicornia Kugler, 1980
- Genus Criptopalpus Rondani, 1863 accepted as Cryptopalpus Rondani, 1850
- Genus Cristoforia Rondani, 1868 accepted as Strongygaster Macquart, 1834
- Genus Crocinosoma Reinhard, 1947
- Genus Crocula
- Genus Crocuta Meigen, 1800
- Genus Croesoactia Townsend, 1927
- Genus Crosskeya Shima & Chao, 1988
- Genus Crossocomyia Bigot, 1891 accepted as Crossocosmia Mik, 1890
- Genus Crossocosmia Mik, 1890
- Genus Crossocosmyia Bigot, 1891 accepted as Crossocosmia Mik, 1890
- Genus Crossoscosmia
- Genus Crossotocnema Bigot, 1886 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Crypsina Brauer & Bergenstamm, 1890
- Genus Cryptocladocera Bezzi, 1923
- Genus Cryptomeigenia Brauer & Bergenstamm, 1891
- Genus Cryptomeigenioidea Thompson, 1968
- Genus Cryptopalpus Rondani, 1850
- Genus Cryptosophia Domingos de Santis, 2018
- Genus Cryptospylosia Townsend, 1928
- Genus Ctenophoraria Gunn, 1925 accepted as Ctenophorocera Brauer & Bergenstamm, 1891
- Genus Ctenophorinia Mesnil, 1963
- Genus Ctenophorocera Brauer & Bergenstamm, 1891
- Genus Ctenophoroceropsis Baranov, 1938
- Genus Cubaemyia Townsend, 1931
- Genus Cubaemyiopsis Thompson, 1963
- Genus Cucuba Richter, 2008
- Genus Cuparymyia Townsend, 1934
- Genus Cuphocera Macquart, 1845
- Genus Cuphoceromyia Blanchard, 1943
- Genus Cuphoceropsis Townsend, 1935
- Genus Currana Özdikmen, 2007
- Genus Curranomyia Townsend in Cuthbertson & Munro, 1941
- Genus Curtisia Robineau-Desvoidy, 1849 accepted as Erythrocera Robineau-Desvoidy, 1849
- Genus Cyanogymnomma Townsend, 1927
- Genus Cyanoleskia Mesnil, 1978
- Genus Cyanopsis Townsend, 1917
- Genus Cyclodionaea Townsend, 1915
- Genus Cyclotaphrys Townsend, 1909
- Genus Cylindrogaster Rondani, 1861 accepted as Cylindrosoma Rondani, 1856
- Genus Cylindromasicera Townsend, 1915
- Genus Cylindromya Oken, 1815 accepted as Cylindromyia Meigen, 1803
- Genus Cylindromyia Meigen, 1803
- Genus Cylindromyiella Malloch, 1926
- Genus Cylindromyiopsis Bezzi, 1906
- Genus Cylindrophasia Townsend, 1916
- Genus Cylindropsis Bezzi, 1906 accepted as Cylindrosoma Rondani, 1856
- Genus Cylindrosoma Rondani, 1856 accepted as Hyperaea Robineau-Desvoidy, 1863
- Genus Cynisca Robineau-Desvoidy, 1863 accepted as Ethilla Robineau-Desvoidy, 1863
- Genus Cynthia Robineau-Desvoidy, 1863 accepted as Bithia Robineau-Desvoidy, 1863
- Genus Cyosoprocta Reinhard, 1952
- Genus Cyphocera Rondani, 1856 accepted as Cyphocera Rondani in Osculati, 1850
- Genus Cyphocera Rondani in Osculati, 1850 accepted as Cuphocera Macquart, 1845
- Genus Cyrillia Robineau-Desvoidy, 1863
- Genus Cyrthophleba Rondani, 1857 accepted as Cyrtophloeba Rondani, 1856
- Genus Cyrthoplaeba Rondani, 1857 accepted as Cyrtophloeba Rondani, 1856
- Genus Cyrtocladia Van Emden, 1947
- Genus Cyrtophleba Rondani, 1856 accepted as Cyrtophloeba Rondani, 1856
- Genus Cyrtophlebia Brauer & Bergenstamm, 1891 accepted as Cyrtophleba Rondani, 1856
- Genus Cyrtophloeba Curran, 1934 accepted as Cyrtophloeba Rondani, 1856
- Genus Cyrtophloeba Rondani, 1856
- Genus Cyrtosoma Brauer & Bergenstamm, 1891 accepted as Ocyrtosoma Townsend, 1912
- Genus Cystogaster Bezzi & Stein in Becker-Kertész, 1907 accepted as Cistogaster Latreille in Cuvier, 1829
- Genus Cystogonia Townsend, 1915
- Genus Cyzenis Robineau-Desvoidy, 1863
- Genus Czernya Strobl, 1909
- Genus Daeochaeta Townsend, 1892
- Genus Daetaleus Aldrich, 1928
- Genus Dallasimyia Blanchard, 1944
- Genus Damonia Robineau-Desvoidy, 1848
- Genus Dasyuromyia Bigot, 1885
- Genus Datvia
- Genus Degeeria Meigen, 1838 accepted as Medina Robineau-Desvoidy, 1830
- Genus Degeeriopsis Mesnil, 1953
- Genus Degeria Gimmerthal, 1842 accepted as Medina Robineau-Desvoidy, 1830
- Genus Dejania Rondani in Osculati, 1850 accepted as Dejeania Robineau-Desvoidy, 1830
- Genus Dejeania Robineau-Desvoidy, 1830
- Genus Dejeaniopalpus Townsend, 1916
- Genus Dejeaniops Townsend, 1913
- Genus Deloblepharis Aldrich, 1934
- Genus Delta Malloch, 1930 accepted as Deltomyza Malloch, 1931
- Genus Deltoceromyia Townsend, 1931
- Genus Deltomyza Malloch, 1931
- Genus Demeticus Lioy, 1864 accepted as Demoticus Macquart, 1854
- Genus Demodice Rafinesque, 1815 accepted as Echinomya Latreille, 1805
- Genus Demoticoides Mesnil, 1953
- Genus Demoticus Macquart, 1854
- Genus Deopalpus Townsend, 1908
- Genus Desantisodes Cortes, 1973
- Genus Descampsina Mesnil, 1956
- Genus Desvoidia Meade, 1892
- Genus Desvoidya Bezzi in Becker-Kertész, 1907
- Genus Deuteroclara Villeneuve, 1915
- Genus Dexia Meigen, 1826
- Genus Dexilla Westwood, 1840
- Genus Deximorpha Rondani, 1856 accepted as Estheria Robineau-Desvoidy, 1830
- Genus Dexiomera Curran, 1933
- Genus Dexiomima Brauer & Bergenstamm, 1895
- Genus Dexiomimops Townsend, 1926
- Genus Dexiomorpha Mik, 1887 accepted as Deximorpha Rondani, 1856
- Genus Dexiosoma Rondani, 1856
- Genus Dexiotrix Villeneuve, 1936
- Genus Dexodes Brauer & Bergenstamm, 1890
- Genus Dexodimyia Thompson, 1968
- Genus Dexodioidea Thompson, 1968
- Genus Dexodiopsis Thompson, 1968
- Genus Dexodomintho Townsend, 1935
- Genus Diaphania Macquart, 1843 accepted as Prodiaphania Townsend, 1927
- Genus Diaphanomyia Townsend, 1917
- Genus Diaphoropeza Townsend, 1908
- Genus Diaprochaeta Mesnil, 1970
- Genus Diatraeophaga Townsend, 1916
- Genus Diaugea Agassiz, 1846
- Genus Diaughia
- Genus Diaugia Perty, 1833
- Genus Dicarca Richter, 1993
- Genus Dicephalomyia Malloch, 1935
- Genus Dichaetoneura Johnson, 1907
- Genus Dichocera Williston, 1895
- Genus Dichoceropsis Townsend, 1916
- Genus Didyma Van der Wulp, 1890
- Genus Didymops Townsend, 1927
- Genus Diglossocera Van der Wulp, 1895
- Genus Digonichaeta Curran, 1934 accepted as Bigonicheta Rondani, 1845
- Genus Digonicheta Rondani, 1868 accepted as Bigonicheta Rondani, 1845
- Genus Digonochaeta Bezzi & Stein, 1907 accepted as Bigonicheta Rondani, 1845
- Genus Digonochaeta Bezzi in Becker-Kertész, 1907
- Genus Dillerileya Doganlar, 1992 accepted as Rileya Brauer & Bergenstamm, 1893
- Genus Dimasicera Townsend, 1915
- Genus Dinera Robineau-Desvoidy, 1830
- Genus Dionaea Robineau-Desvoidy, 1830
- Genus Dionea Rondani, 1861 accepted as Dionaea Robineau-Desvoidy, 1830
- Genus Dionomelia Kugler, 1978
- Genus Diotrephes Reinhard, 1964
- Genus Diplopota Bezzi, 1918
- Genus Diplostichus Brauer & Bergenstamm, 1890
- Genus Dira Gistl, 1848 accepted as Triarthria Stephens, 1829
- Genus Dischotrichia Cortés, 1944
- Genus Discochaeta Brauer & Bergenstamm, 1890
- Genus Distichona Van der Wulp, 1890
- Genus Doddiana Curran, 1927 accepted as Currana Özdikmen, 2007
- Genus Dodiana
- Genus Doleschalla Walker, 1861
- Genus Dolichocnephalia Townsend, 1915
- Genus Dolichocodia Townsend, 1908
- Genus Dolichocolon Brauer & Bergenstamm, 1890
- Genus Dolichocoxys Townsend, 1927
- Genus Dolichocyptera Townsend, 1931
- Genus Dolichodexia Brauer & Bergenstamm, 1890
- Genus Dolichodinera Townsend, 1935
- Genus Dolichogonia Townsend, 1915
- Genus Dolichopalpellus Townsend, 1927
- Genus Dolichopodomintho Townsend, 1927
- Genus Dolichostoma Townsend, 1912
- Genus Dolichotarsina Mesnil, 1977
- Genus Dolichotarsus Brooks, 1945
- Genus Doliolomyia Reinhard, 1975
- Genus Donovanius Enderlein, 1936
- Genus Dorbinia Robineau-Desvoidy, 1847 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Doria Meigen, 1838
- Genus Doryphorophaga Townsend, 1912
- Genus Drepanoglossa Townsend, 1891
- Genus Drino Robineau-Desvoidy, 1863
- Genus Drinomyia Mesnil in Lindner, 1962
- Genus Dufouria Robineau-Desvoidy, 1830
- Genus Dumerilia Macquart, 1835 accepted as Dumerillia Robineau-Desvoidy, 1830
- Genus Dumerilia Duponchel in d'Orbigny, 1844 accepted as Dumerillia Robineau-Desvoidy, 1830
- Genus Dumerillia Robineau-Desvoidy, 1830
- Genus Duponchelia Robineau-Desvoidy, 1863 accepted as Parasetigena Brauer & Bergenstamm, 1891
- Genus Duvaucelia Robineau-Desvoidy, 1830 accepted as Lophosia Meigen, 1824
- Genus Dycolomyia
- Genus Dynera Rondani, 1861 accepted as Dinera Robineau-Desvoidy, 1830
- Genus Dyscolomyia Reinhard, 1959
- Genus Dyshypostena Villeneuve, 1939
- Genus Dysoestrus Villeneuve, 1937
- Genus Ebenia Macquart, 1846
- Genus Ecatocyptera Townsend, 1927
- Genus Ecatocypterops Townsend, 1935
- Genus Echinodexia Brauer & Bergenstamm, 1893
- Genus Echinomasicera Townsend, 1915
- Genus Echinomia Rondani, 1861 accepted as Echinomya Latreille, 1805
- Genus Echinomijia Doleschall, 1856 accepted as Echinomya Latreille, 1805
- Genus Echinomya Latreille, 1805
- Genus Echinomyia Latreille, 1809 accepted as Echinomya Latreille, 1805
- Genus Echinomyodes Townsend, 1916
- Genus Echinopyrrhosia Townsend, 1914
- Genus Echinopyrrhosiops Townsend, 1931
- Genus Ectophasia Townsend, 1912
- Genus Ectophasiopsis Townsend, 1915
- Genus Ecuadorana Townsend, 1913
- Genus Edesia Robineau-Desvoidy, 1863 accepted as Ceromasia Rondani, 1856
- Genus Edomya Robineau-Desvoidy, 1863 accepted as Oswaldia Robineau-Desvoidy, 1863
- Genus Edomyia Bezzi & Stein, 1907 accepted as Edomya Robineau-Desvoidy, 1863
- Genus Edwynia Aldrich, 1930
- Genus Efftayloria Malloch, 1941
- Genus Effusimentum Barraclough, 1992
- Genus Egameigenia Townsend, 1927
- Genus Eggeria Schiner, 1861
- Genus Eggonia
- Genus Eipogona Rondani, 1868 accepted as Buquetia Robineau-Desvoidy, 1847
- Genus Eipogonoides Curran, 1938
- Genus Elachipalpus Rondani, 1850 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Elaphroptera Gistl, 1848 accepted as Ocyptera Latreille, 1804
- Genus Elassomyia Reinhard, 1967
- Genus Elbaea Robineau-Desvoidy, 1863
- Genus Elboea Robineau-Desvoidy, 1863 accepted as Elbaea Robineau-Desvoidy, 1863
- Genus Eleodiphaga Walton, 1918
- Genus Eleone Robineau-Desvoidy, 1863 accepted as Rhamphina Macquart, 1835
- Genus Elephantocera Townsend, 1915
- Genus Elepharipoda
- Genus Eleuthromyia Reinhard, 1964
- Genus Elfia Robineau-Desvoidy, 1850 accepted as Phytomyptera Rondani, 1845
- Genus Elfriedella Mesnil, 1957
- Genus Eliozeta Rondani, 1856
- Genus Eliozetta Lioy, 1865 accepted as Eliozeta Rondani, 1856
- Genus Eloceria Robineau-Desvoidy, 1863
- Genus Elodia Robineau-Desvoidy, 1863
- Genus Elodimyia Mesnil in Lindner, 1955
- Genus Elomya Robineau-Desvoidy, 1830
- Genus Elomyia Macquart, 1834 accepted as Elomya Robineau-Desvoidy, 1830
- Genus Elophoria Robineau-Desvoidy, 1830
- Genus Elpe Robineau-Desvoidy, 1863 accepted as Campylocheta Rondani, 1859
- Genus Elphia Lucas, 1850 accepted as Elfia Robineau-Desvoidy, 1850
- Genus Embiomyia Aldrich, 1934
- Genus Embiophoneus Badano, Lenzi, O'Hara, Miller, Di Giulio, Di Giovanni & Cerretti, 2022
- Genus Emphanopteryx Townsend, 1892
- Genus Empheremyia Bischof, 1904
- Genus Empheremyiops Townsend, 1927
- Genus Emporomyia Brauer & Bergenstamm, 1891
- Genus Enchomyia Aldrich, 1934
- Genus Engeddia Kugler, 1977
- Genus Engelomyia Townsend, 1931
- Genus Engycera Malloch, 1938 accepted as Gracilicera Miller, 1945
- Genus Ennyomma Townsend, 1891
- Genus Ennyommopsis Townsend, 1915
- Genus Enrogalia Reinhard, 1964
- Genus Enthenis Robineau-Desvoidy, 1863 accepted as Lypha Robineau-Desvoidy, 1830
- Genus Entomophaga Lioy, 1864
- Genus Eoacemyia Townsend, 1926
- Genus Eocarcelia Townsend, 1919
- Genus Eocarceliopsis Townsend, 1928
- Genus Eocatagonia Mesnil in Lindner, 1950 accepted as Sisyropa Brauer & Bergenstamm, 1890
- Genus Eocyptera Townsend, 1927
- Genus Eocypterula Townsend, 1926
- Genus Eodexiosoma Townsend, 1926
- Genus Eogymnophthalma Townsend, 1926
- Genus Eohyria Townsend, 1915
- Genus Eomeigenielloides Reinhard, 1975
- Genus Eomintho Townsend, 1926
- Genus Eomyocera Townsend, 1926
- Genus Eomyoceropsis Townsend, 1926
- Genus Eoparachaeta Townsend, 1927
- Genus Eophrissopolia Townsend, 1926
- Genus Eophyllophila Townsend, 1926
- Genus Eoptilodexia Townsend, 1926
- Genus Eozenillia Townsend, 1926
- Genus Epalpellus Townsend, 1914
- Genus Epalpodes Townsend, 1912
- Genus Epalpus Rondani, 1850
- Genus Epaulophasia Townsend, 1934
- Genus Eperia Robineau-Desvoidy, 1863
- Genus Ephyra Robineau-Desvoidy, 1863 accepted as Bessa Robineau-Desvoidy, 1863
- Genus Epicampocera Macquart, 1850
- Genus Epicoronimyia Blanchard, 1940
- Genus Epicuphocera Townsend, 1927
- Genus Epidexia Townsend, 1912
- Genus Epidexiopsis Townsend, 1916
- Genus Epidolichostoma Townsend, 1927
- Genus Epigrimyia Townsend, 1891
- Genus Epigrymyia Blanchard, 1940 accepted as Epigrimyia Townsend, 1891
- Genus Epimeigenia Townsend, 1931
- Genus Epineura Brauer & Bergenstaum, 1891
- Genus Epiphanocera Townsend, 1915
- Genus Epiphyllophila Townsend, 1927
- Genus Epiplagiops Blanchard, 1943
- Genus Epiprospherysa Townsend, 1927
- Genus Epixorista Townsend, 1927
- Genus Epseudocyptera Townsend, 1927
- Genus Eratia Robineau-Desvoidy, 1863 accepted as Strongygaster Macquart, 1834
- Genus Erebia Robineau-Desvoidy, 1830 accepted as Avernia Rondani, 1857
- Genus Erebiomima Mesnil, 1953
- Genus Eretria Robineau-Desvoidy, 1863 accepted as Phorinia Robineau-Desvoidy, 1830
- Genus Ergolabus Reinhard, 1964
- Genus Eribea Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Erigone Robineau-Desvoidy, 1830 accepted as Eurithia Robineau-Desvoidy, 1844
- Genus Erigonopsis Townsend, 1912
- Genus Erinia Robineau-Desvoidy, 1863 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Erinnia Rondani, 1856 accepted as Erynnia Robineau-Desvoidy, 1830
- Genus Erinnia Bezzi & Stein, 1907 accepted as Erinia Robineau-Desvoidy, 1863
- Genus Erinnya Agassiz, 1846 accepted as Erynnia Robineau-Desvoidy, 1830
- Genus Eriothrix Meigen, 1803
- Genus Eriothryx Schiner, 1868 accepted as Eriothrix Meigen, 1803
- Genus Eristaliomyia Townsend, 1926
- Genus Erithorix Townsend, 1911 accepted as Eriothrix Meigen, 1803
- Genus Ernestia Robineau-Desvoidy, 1830 accepted as Panzeria Robineau-Desvoidy, 1830
- Genus Ernestiopsis Townsend, 1931
- Genus Ervia Robineau-Desvoidy, 1830 accepted as Icelia Robineau-Desvoidy, 1830
- Genus Erviopsis Townsend, 1934
- Genus Erycesta Herting, 1967
- Genus Erycia Robineau-Desvoidy, 1830
- Genus Erycilla Mesnil, 1957
- Genus Erycina Mesnil, 1955 accepted as Erycilla Mesnil, 1957
- Genus Erycioides Curran, 1930 accepted as Lixophaga Townsend, 1908
- Genus Erynnia Robineau-Desvoidy, 1830
- Genus Erynniola Mesnil, 1977
- Genus Erynniopsis Townsend, 1926
- Genus Eryphe Robineau-Desvoidy, 1863
- Genus Erytaea Robineau-Desvoidy, 1863 accepted as Oswaldia Robineau-Desvoidy, 1863
- Genus Erythroargyrops Townsend, 1917
- Genus Erythrocera Robineau-Desvoidy, 1849
- Genus Erythroepalpus Townsend, 1931
- Genus Erythromelana Townsend, 1919
- Genus Erythronychia Brauer & Bergenstamm, 1891
- Genus Erythrophasia Townsend, 1917
- Genus Esila Robineau-Desvoidy, 1863
- Genus Essenia Robineau-Desvoidy, 1863
- Genus Esteria Rondani, 1862 accepted as Estheria Robineau-Desvoidy, 1830
- Genus Estheria Robineau-Desvoidy, 1830
- Genus Etheria Robineau-Desvoidy, 1863 accepted as Strongygaster Macquart, 1834
- Genus Ethilla Robineau-Desvoidy, 1863
- Genus Ethyllia Mesnil, 1939 accepted as Ethilla Robineau-Desvoidy, 1863
- Genus Ethylloides Verbeke, 1970
- Genus Etroga Richter, 1994
- Genus Euacaulona Townsend, 1908
- Genus Euacemyia Townsend, 1912
- Genus Euadmontia Townsend, 1915
- Genus Euanisia Blanchard, 1947
- Genus Euantha Van der Wulp, 1885
- Genus Euanthoides Townsend, 1931
- Genus Eubelvosiopsis Blanchard, 1954
- Genus Eubiomyia Townsend, 1916
- Genus Eubischofimyia
- Genus Eublepharipeza Townsend, 1914
- Genus Eubrachymera Townsend, 1919
- Genus Eucadorana Rathbun, 1913 accepted as Ecuadorana Townsend, 1913
- Genus Eucalodexia Townsend, 1908
- Genus Eucarcelia Baranov, 1934
- Genus Eucelatoria Townsend, 1909
- Genus Eucelatorioidea Thompson, 1968
- Genus Eucelatoriopsis Townsend, 1927
- Genus Euceromasia Townsend, 1912
- Genus Euchaetactia Villeneuve, 1921
- Genus Euchaetogyne Townsend, 1908
- Genus Euchaetophleps Townsend, 1916
- Genus Eucheirophaga James, 1945
- Genus Euclausicella Townsend, 1927
- Genus Euclesia Aldrich, 1926 accepted as Uclesia Girschner, 1901
- Genus Euclytia Townsend, 1908
- Genus Eucnephalia Townsend, 1892
- Genus Eucomus Aldrich, 1926
- Genus Eucordylidexia Townsend, 1915
- Genus Eucordyligaster Townsend, 1917
- Genus Eucoronimyia Townsend, 1908
- Genus Eucoronomyia Curran, 1934 accepted as Isoglossa Coquillett, 1895
- Genus Eucorpulentosoma Townsend, 1914
- Genus Eucyrtophloeba Townsend, 1916
- Genus Eudejeania Townsend, 1912
- Genus Eudejeaniops Blanchard, 1941
- Genus Eudemoticus Townsend, 1908
- Genus Eudexia Brauer & Bergenstamm, 1890
- Genus Eudora Robineau-Desvoidy, 1863 accepted as Eudoromyia Bezzi, 1906
- Genus Eudoromyia Bezzi, 1906
- Genus Euempheremyia Townsend, 1927
- Genus Euepalpodes Townsend, 1915
- Genus Euepalpus Townsend, 1908
- Genus Euëpalpus Townsend, 1908 accepted as Euepalpus Townsend, 1908
- Genus Euexorista Townsend, 1912
- Genus Eufabricia Townsend, 1908
- Genus Eufabriciopsis Townsend, 1915
- Genus Eufischeria Brauer & Bergenstamm, 1891
- Genus Eufrontina Brooks, 1945
- Genus Eugaedia Townsend, 1916
- Genus Eugaediopsis Townsend, 1916
- Genus Eugenia Robineau-Desvoidy, 1863
- Genus Eugymnochaeta Townsend, 1912
- Genus Eugymnochaetopsis Townsend, 1927
- Genus Eugymnogaster Townsend, 1931
- Genus Eugymnopeza Townsend, 1932
- Genus Euhalidaya Curran, 1934 accepted as Euhalidaya Walton, 1914
- Genus Euhalidaya Walton, 1914
- Genus Euhallidaya Walton, 1914 accepted as Euhalidaya Walton, 1914
- Genus Euhapalivora Gardner, 1940
- Genus Euhelioprosopa Reinhard, 1964
- Genus Euhemiarggyra
- Genus Euhemiargyra Townsend, 1927
- Genus Euhuascaraya Townsend, 1927
- Genus Euhygia Mesnil in Lindner, 1960
- Genus Euhyperecteina Townsend, 1915
- Genus Euhypochaetopsis Townsend, 1928
- Genus Euhystricia Townsend, 1914
- Genus Eujurinella Townsend, 1914
- Genus Eujuriniodes Townsend, 1935
- Genus Eularvaevora Townsend, 1916
- Genus Eulasiona Townsend, 1892
- Genus Eulasiopalpus Townsend, 1913
- Genus Eulobomyia Woodley & Arnaud, 2008
- Genus Euloewia Townsend, 1915
- Genus Euloewiodoria Townsend, 1927
- Genus Euloewiopsis Townsend, 1917
- Genus Eumachaeraea Townsend, 1927
- Genus Eumacrohoughia Townsend, 1927
- Genus Eumasicera Townsend, 1909
- Genus Eumea Robineau-Desvoidy, 1863
- Genus Eumeella Mesnil, 1939
- Genus Eumegaparea Curran, 1934
- Genus Eumegaparia Townsend, 1908
- Genus Eumelanepalpus Townsend, 1915
- Genus Eumicrophthalma Townsend, 1915
- Genus Eumogenia Curran, 1934 accepted as Euomogenia Townsend, 1908
- Genus Eumyiobia
- Genus Eumyobia Townsend, 1911
- Genus Eumyothyria Townsend, 1892
- Genus Eunemorilla Townsend, 1919
- Genus Euoestrogaster Townsend, 1935
- Genus Euoestrogastrodes Townsend, 1935
- Genus Euoestrophasia Townsend, 1892
- Genus Euoestropsis Townsend, 1913
- Genus Euomogenia Townsend, 1908
- Genus Eupalpocyptera Townsend, 1927
- Genus Euparafrontina Brèthes, 1917
- Genus Eupelecotheca Townsend, 1919
- Genus Euphasia Townsend, 1908 † accepted as Neximyia Crosskey, 1967 †
- Genus Euphasiopteryx Townsend, 1915
- Genus Euphorantha Townsend, 1915
- Genus Euphorocera Townsend, 1892
- Genus Euphoroceropsis Townsend, 1917
- Genus Eupodermocera Tothill, 1924
- Genus Eupododexia Villeneuve, 1915
- Genus Eupogona Bezzi & Stein, 1907 accepted as Eupogona Brauer & Bergenstamm, 1889
- Genus Eupogona Brauer & Bergenstamm, 1889 accepted as Eipogona Rondani, 1868
- Genus Euprepodes Gistl, 1848 accepted as Gaedia Meigen, 1838
- Genus Euproctimyia Villeneuve, 1921
- Genus Euprospherysa Townsend, 1928
- Genus Euptilodegeeria Townsend, 1931
- Genus Euptilomyia Townsend, 1939
- Genus Euptilopareia
- Genus Euquadratosoma Townsend, 1915
- Genus Eurigaster Macquart, 1834
- Genus Euristhaea Marschall, 1873 accepted as Eurysthaea Robineau-Desvoidy, 1863
- Genus Eurithia Robineau-Desvoidy, 1844
- Genus Euryceromyia Townsend, 1892
- Genus Euryclea Robineau-Desvoidy, 1863 accepted as Carcelia Robineau-Desvoidy, 1830
- Genus Eurygaster Agassiz, 1846 accepted as Eurigaster Macquart, 1834
- Genus Eurygastropsis Townsend, 1916
- Genus Eurylochus Reinhard, 1967
- Genus Eurysthaea Robineau-Desvoidy, 1863
- Genus Eurysurstyla Chao & Shi, 1980
- Genus Eurythemyia Reinhard, 1967 accepted as Eurylochus Reinhard, 1967
- Genus Eurythia Robineau-Desvoidy, 1863 accepted as Eurithia Robineau-Desvoidy, 1844
- Genus Eurythiopsis Townsend, 1914
- Genus Eusaundersiops Townsend, 1915
- Genus Euscopolia Townsend, 1892
- Genus Eusignosoma Townsend, 1914
- Genus Eusisyropa Townsend, 1908
- Genus Eustacomyia Malloch, 1927
- Genus Eutachina Brauer & Bergenstamm, 1890
- Genus Eutelothyria Townsend, 1931
- Genus Euthelaira Townsend, 1912
- Genus Euthelairopsis Townsend, 1927
- Genus Euthelairosoma Townsend, 1926
- Genus Euthelyconychia Townsend, 1927
- Genus Euthera Loew, 1866
- Genus Eutheresia Townsend, 1911
- Genus Eutheresiops Townsend, 1917
- Genus Euthyprosopa Townsend, 1892
- Genus Euthyprosopiella Blanchard, 1963
- Genus Eutorocca Townsend, 1919
- Genus Eutrapelus Reinhard, 1975
- Genus Eutrichogena Curran, 1934 accepted as Eutricogena Townsend, 1915
- Genus Eutrichophora Townsend, 1915
- Genus Eutrichopoda Townsend, 1908
- Genus Eutrichopodopsis Blanchard, 1966
- Genus Eutricogena Townsend, 1915
- Genus Eutritochaeta Townsend, 1919
- Genus Eutrixa Coquillett, 1897
- Genus Eutrixina Curran, 1938
- Genus Eutrixoides Walton, 1913
- Genus Eutrixopsis Townsend, 1919
- Genus Euvespivora Baranov, 1942
- Genus Euwinthemia Blanchard, 1963
- Genus Euzelia Townsend, 1915
- Genus Euzeniliopsis
- Genus Euzenilla Townsend, 1912 accepted as Lixophaga Townsend, 1908
- Genus Euzenillia Curran, 1934 accepted as Lixophaga Townsend, 1908
- Genus Euzenillia Townsend, 1911 accepted as Lixophaga Townsend, 1908
- Genus Euzenilliopsis Townsend, 1916 accepted as Lixophaga Townsend, 1908
- Genus Evanalia Strickland, 1941
- Genus Everestiomyia Townsend, 1932
- Genus Eversmania Robineau-Desvoidy, 1863 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Eversmannia Curran, 1934
- Genus Eversmannia Marschall, 1873 accepted as Eversmania Robineau-Desvoidy, 1863
- Genus Evibrissa Rondani, 1861 accepted as Hemyda Robineau-Desvoidy, 1830
- Genus Evidomyia Reinhard, 1958
- Genus Eweka Lehrer, 2012 accepted as Pales Robineau-Desvoidy, 1830
- Genus Exechopalpus Macquart, 1847
- Genus Exodexia Townsend, 1927
- Genus Exoernestia Townsend, 1927
- Genus Exogaster Rondani, 1856 accepted as Cylindromyia Meigen, 1803
- Genus Exopalpus Macquart, 1851
- Genus Exorista Meigen, 1803
- Genus Exorista Rafinesque, 1815 accepted as Phasia Latreille, 1804
- Genus Exoristella Mesnil, 1946 accepted as Exoristella Herting, 1984
- Genus Exoristella Herting, 1984 accepted as Exorista Meigen, 1803
- Genus Exoristoides Coquillett, 1897
- Genus Exoristoïdes Coquillett, 1897 accepted as Exoristoides Coquillett, 1897
- Genus Exoristopsis Townsend, 1915
- Genus Fabricia Latreille in Cuvier, 1829 accepted as Fabriciella Bezzi, 1906
- Genus Fabricia Meigen, 1838 accepted as Fabricia Robineau-Desvoidy, 1830
- Genus Fabricia Robineau-Desvoidy, 1830 accepted as Tachina Meigen, 1803
- Genus Fabriciella Bezzi, 1906
- Genus Fabriciodes Townsend, 1916
- Genus Fabriciopsis Townsend, 1914
- Genus Faedoria Robineau-Desvoidy, 1863
- Genus Fallenia Meigen, 1838 accepted as Frivaldskia Schiner, 1861
- Genus Fasslomyia Townsend, 1931
- Genus Faunia Robineau-Desvoidy, 1830 accepted as Tachina Meigen, 1803
- Genus Faurella Robineau-Desvoidy, 1830 accepted as Peleteria Robineau-Desvoidy, 1830
- Genus Fausta Robineau-Desvoidy, 1830
- Genus Feburia Robineau-Desvoidy, 1830
- Genus Feria Robineau-Desvoidy, 1830
- Genus Feriola Mesnil, 1957
- Genus Fisceria Rondani, 1856 accepted as Fischeria Robineau-Desvoidy, 1830
- Genus Fischeria Robineau-Desvoidy, 1830
- Genus Flavicorniculum Chao & Shi, 1981
- Genus Floradalia Thompson, 1963
- Genus Foedoria Robineau-Desvoidy, 1863 accepted as Faedoria Robineau-Desvoidy, 1863
- Genus Formicomyia Townsend, 1916
- Genus Formicophania Townsend, 1916
- Genus Formodexia Crosskey, 1973
- Genus Formosia Guérin-Méneville, 1843
- Genus Formosodoria Townsend, 1932
- Genus Formosolophosia Townsend, 1927
- Genus Fortisia Rondani, 1861 accepted as Loewia Egger, 1856
- Genus Freraea Robineau-Desvoidy, 1830
- Genus Frerea Rondani, 1856 accepted as Freraea Robineau-Desvoidy, 1830
- Genus Frivaldskia Schiner, 1861
- Genus Frivaldskyia Schiner, 1862 accepted as Frivaldskia Schiner, 1861
- Genus Frivaldszkia Schiner, 1862 accepted as Frivaldskia Schiner, 1861
- Genus Frivaldzkia Schiner, 1862 accepted as Frivaldskia Schiner, 1861
- Genus Frivaldzkya Schiner, 1862 accepted as Frivaldskia Schiner, 1861
- Genus Frixe Rondani, 1873 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Froggattimyia Townsend, 1916
- Genus Frontina Meigen, 1838
- Genus Frontiniella Townsend, 1918
- Genus Frontiniellopsis Townsend, 1927
- Genus Frontinogaedia Townsend, 1926
- Genus Frontocnephalia Townsend, 1916
- Genus Frontodexia Mesnil, 1976
- Genus Furunculus Gistl, 1848 accepted as Trichopoda Latreille, 1825
- Genus Fuscigonia Brooks, 1943
- Genus Futilia Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Gabanimyia Townsend, 1914
- Genus Gaedartia Robineau-Desvoidy, 1863 accepted as Campylocheta Rondani, 1859
- Genus Gaedia Meigen, 1838
- Genus Gaediogonia Townsend, 1927
- Genus Gaediophana Brauer & Bergenstamm, 1893
- Genus Gaediophanopsis Blanchard, 1954
- Genus Gaediopsis Brauer & Bergenstamm, 1891
- Genus Gaediosturmia Blanchard, 1963
- Genus Gaedioxenis Villeneuve, 1937 accepted as Gaedioxenis Townsend, 1943
- Genus Gaedioxenis Townsend, 1943
- Genus Galactomyia Townsend, 1908
- Genus Galapagosia Curran, 1934
- Genus Galsania Richter, 1993
- Genus Ganopleuron Aldrich, 1934
- Genus Ganoproctus Aldrich, 1934
- Genus Gastrolepta Rondani, 1862
- Genus Gastroptilops Mesnil, 1957
- Genus Gaubilia Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Gautengicesa Koçak & Kemal, 2010
- Genus Gedia Rondani, 1856 accepted as Gaedia Meigen, 1838
- Genus Gemursa Barraclough, 1992
- Genus Genea Rondani, 1850
- Genus Geneodes Townsend, 1934
- Genus Geneoglossa Townsend, 1935
- Genus Geneopsis Townsend, 1927
- Genus Genotrichia Malloch, 1938
- Genus Geraldia Malloch, 1930
- Genus Germaria Robineau-Desvoidy, 1830
- Genus Germariochaeta Villeneuve, 1937
- Genus Germariopsis Townsend, 1915
- Genus Gerocyptera Townsend, 1916
- Genus Gervaisia Robineau-Desvoidy, 1863 accepted as Blondelia Robineau-Desvoidy, 1830
- Genus Gibsonomyia Curran, 1925
- Genus Gigamyiopsis Reinhard, 1964
- Genus Gigantachinosoma Townsend, 1932
- Genus Gigantoepalpus Townsend, 1931
- Genus Gigliomyia Zimin, 1935
- Genus Gimmenthalia Robineau-Desvoidy, 1863
- Genus Gimmerthalia Bezzi & Stein, 1907 accepted as Gimmenthalia Robineau-Desvoidy, 1863
- Genus Gimnocheta Rondani, 1859 accepted as Gymnocheta Robineau-Desvoidy, 1830
- Genus Gimnosoma Rondani, 1862 accepted as Gymnosoma Meigen, 1803
- Genus Ginglichaeta Curran, 1934 accepted as Ginglychaeta Aldrich, 1926
- Genus Ginglimyia Curran, 1934 accepted as Ginglymia Townsend, 1892
- Genus Ginglychaeta Aldrich, 1926
- Genus Ginglymia Townsend, 1892
- Genus Ginglymyia Coquillett, 1910 accepted as Ginglymia Townsend, 1892
- Genus Girschneria Townsend, 1919
- Genus Glaucophana Brauer & Bergenstamm, 1891
- Genus Glaurocara Thomson, 1869
- Genus Glossidionophora Bigot, 1885
- Genus Glossosalia Mesnil, 1946 accepted as Glossosalia Mesnil, 1950
- Genus Glossosalia Mesnil, 1950 accepted as Austrophorocera Townsend, 1916
- Genus Gnadochaeta
- Genus Gnadochoeta Macquart, 1851
- Genus Gnephalia Lioy, 1864 accepted as Cnephalia Rondani, 1856
- Genus Goedartia Bezzi in Becker-Kertész, 1907
- Genus Goedartia Bezzi & Stein, 1907 accepted as Gaedartia Robineau-Desvoidy, 1863
- Genus Goliathocera Townsend, 1915
- Genus Gonatorrhina Röder, 1886
- Genus Gonia Meigen, 1803
- Genus Gonida Gobert, 1887 accepted as Gonia Meigen, 1803
- Genus Goniocera Brauer & Bergenstamm, 1891
- Genus Goniochaeta Townsend, 1891
- Genus Gonioclea Villeneuve, 1929
- Genus Goniocnephalia Townsend, 1915
- Genus Goniomima Townsend, 1908
- Genus Goniomorphomyia Zimin, 1929
- Genus Goniophthalmus Villeneuve, 1910
- Genus Gonistylum Macquart, 1851
- Genus Gonitimya Chao & Liu in Liu & Zhao, 1998
- Genus Gonystylum Macquart, 1851
- Genus Gonzalezodoria Cortes, 1967
- Genus Gopaulia Thompson, 1968
- Genus Gouraldia Robineau-Desvoidy, 1851 accepted as Eumea Robineau-Desvoidy, 1863
- Genus Gouroldtia Rondani, 1873 accepted as Gouraldia Robineau-Desvoidy, 1851
- Genus Gracilicera Miller, 1945
- Genus Graphalostylum Macquart, 1851 accepted as Grapholostylum Macquart, 1851
- Genus Graphia Van der Wulp, 1885
- Genus Graphogaster Rondani, 1868
- Genus Grapholostylum Macquart, 1851
- Genus Graphotachina Malloch, 1938
- Genus Gravenhorstia Robineau-Desvoidy, 1863 accepted as Admontia Brauer & Bergenstamm, 1889
- Genus Gremlinotrophus Reinhard, 1943
- Genus Grisdalemyia Curran, 1926
- Genus Guerinia Robineau-Desvoidy, 1830
- Genus Gueriniopsis Reinhard, 1943
- Genus Gwenda Richter, 1977
- Genus Gymnamedoria Townsend, 1927
- Genus Gymnaporia Townsend, 1919
- Genus Gymnocarcelia Townsend, 1919
- Genus Gymnochaeta Macquart, 1835 accepted as Gymnocheta Robineau-Desvoidy, 1830
- Genus Gymnochaetopsis Townsend, 1914
- Genus Gymnocheta Robineau-Desvoidy, 1830
- Genus Gymnoclytia Brauer & Bergenstamm, 1893
- Genus Gymnocuphocera Blanchard, 1943
- Genus Gymnodexia Brauer & Bergenstamm, 1891
- Genus Gymnodoria Townsend, 1927
- Genus Gymnoerycia Townsend, 1916
- Genus Gymnogaster Townsend, 1926
- Genus Gymnoglossa Mik, 1898
- Genus Gymnomacquartia Mesnil & Shima, 1978
- Genus Gymnomma Van der Wulp, 1888
- Genus Gymnommopsis Townsend, 1927
- Genus Gymnopalpus Townsend, 1919
- Genus Gymnoparea Mik, 1890 accepted as Gymnopareia Brauer & Bergenstamm, 1890
- Genus Gymnopareia Brauer & Bergenstamm, 1890
- Genus Gymnoparia Mik, 1890 accepted as Gymnopareia Brauer & Bergenstamm, 1890
- Genus Gymnopeza Zetterstedt, 1838
- Genus Gymnophania Brauer & Bergenstamm, 1890
- Genus Gymnophryxe Villeneuve, 1922
- Genus Gymnopsis Rondani, 1859 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Gymnosoma Meigen, 1803
- Genus Gymnosomia Latreille in Cuvier, 1829 accepted as Gymnosoma Meigen, 1803
- Genus Gymnostilia Bigot, 1885 accepted as Gymnostylia Macquart, 1835
- Genus Gymnostilina Schiner, 1861 accepted as Gymnostylia Macquart, 1835
- Genus Gymnosturmia Townsend, 1927
- Genus Gymnostylia Macquart, 1835
- Genus Gymnostylina Macquart, 1855 accepted as Gymnostylia Macquart, 1835
- Genus Gynandromyia Bezzi, 1923
- Genus Halesa Robineau-Desvoidy, 1863
- Genus Halidaya Frauenfeld, 1860 accepted as Halydaia Egger, 1856
- Genus Halidayopsis Townsend, 1927
- Genus Halijdaia Dalla Torre, 1898 accepted as Halydaia Egger, 1856
- Genus Halophora Agassiz, 1846 accepted as Alophora Robineau-Desvoidy, 1830
- Genus Halydaia Egger, 1856
- Genus Hamaxia Walker, 1860
- Genus Hamaxiella Mesnil, 1967
- Genus Hamaxioides
- Genus Hamaxiomima Verbeke, 1962
- Genus Hammaxia Brauer & Bergenstamm, 1893 accepted as Hamaxia Walker, 1860
- Genus Hapalioloemus Baranov, 1934
- Genus Haplomyia Agassiz, 1846 accepted as Aplomya Robineau-Desvoidy, 1830
- Genus Haracca Richter, 1994
- Genus Harrisia Robineau-Desvoidy, 1830
- Genus Harrisia Meigen, 1838 accepted as Harrisia Robineau-Desvoidy, 1830
- Genus Harrisiopsis Townsend, 1927
- Genus Harrysia Rondani, 1865 accepted as Harrisia Robineau-Desvoidy, 1830
- Genus Hasmica Rihter, 1972
- Genus Haydaea Robineau-Desvoidy, 1863 accepted as Istocheta Rondani, 1859
- Genus Haywardiamyia
- Genus Hebia Robineau-Desvoidy, 1830
- Genus Hega Enderlein, 1936
- Genus Hegesinus Reinhard, 1964
- Genus Heliaea Curran, 1934
- Genus Heliconiophaga Thompson, 1966
- Genus Heliodexodes Thompson, 1968
- Genus Heliodorus Reinhard, 1964
- Genus Heliolydella Townsend, 1934 accepted as Heliolydella Townsend, 1927
- Genus Heliolydella Townsend, 1927
- Genus Heliolydellops Townsend, 1934 accepted as Heliolydella Townsend, 1927
- Genus Helioplagia Townsend, 1934
- Genus Helioprosopa Townsend, 1927
- Genus Heliozeta Bezzi & Stein, 1907 accepted as Eliozeta Rondani, 1856
- Genus Helocera Mik, 1884 accepted as Eloceria Robineau-Desvoidy, 1863
- Genus Helomyia Meigen, 1838 accepted as Elomya Robineau-Desvoidy, 1830
- Genus Helomyia Agassiz, 1846 accepted as Elomya Robineau-Desvoidy, 1830
- Genus Helophoria Agassiz, 1846 accepted as Elophoria Robineau-Desvoidy, 1830
- Genus Hemiargyra Townsend, 1908
- Genus Hemiargyrophylax Townsend, 1927
- Genus Hemiargyropsis Townsend, 1927
- Genus Hemidegeeria Villeneuve, 1929
- Genus Hemilinnaemyia Villeneuve, 1932
- Genus Hemilydella Townsend, 1927
- Genus Hemimacquartia Brauer & Bergenstamm, 1893
- Genus Hemimasicera Brauer & Bergenstamm, 1890
- Genus Hemimasipoda Townsend, 1927
- Genus Hemipeletieria Zimin, 1961
- Genus Hemiphania Villeneuve, 1937
- Genus Hemisturmia Townsend, 1927
- Genus Hemisturmiella Guimarães, 1983
- Genus Hemithaea Robineau-Desvoidy, 1863 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Hemithrixion Brauer & Bergenstamm, 1891
- Genus Hemiwinthemia Villeneuve, 1938
- Genus Hemyda Robineau-Desvoidy, 1830
- Genus Heraultia Villeneuve, 1920
- Genus Héraultia Villeneuve, 1920 accepted as Heraultia Villeneuve, 1920
- Genus Herbstia Robineau-Desvoidy, 1851 accepted as Peribaea Robineau-Desvoidy, 1863
- Genus Herilla Robineau-Desvoidy, 1863
- Genus Hermya Robineau-Desvoidy, 1830
- Genus Hermyia Verrall in Scudder, 1882 accepted as Hermya Robineau-Desvoidy, 1830
- Genus Hersilia Robineau-Desvoidy, 1863 accepted as Oswaldia Robineau-Desvoidy, 1863
- Genus Hesione Robineau-Desvoidy, 1863 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Hesperodinera Townsend, 1919
- Genus Hesperomyia Brauer & Bergenstamm, 1890
- Genus Hesperophasia Townsend, 1915
- Genus Hesperophasiopsis Townsend, 1915
- Genus Heteria Malloch, 1930
- Genus Heterometopia Macquart, 1846
- Genus Hexamera Brauer & Bergenstamm, 1890
- Genus Heyneophasia Townsend, 1934
- Genus Hillia Malloch, 1929 † accepted as Hillomyia Crosskey, 1973 †
- Genus Hillomyia Crosskey, 1973 †
- Genus Himantostoma Loew, 1863 accepted as Imitomyia Townsend, 1912
- Genus Himera Robineau-Desvoidy, 1863
- Genus Hineomyia Townsend, 1916
- Genus Hipostena Rondani, 1861 accepted as Hypostena Meigen, 1838
- Genus Histochaeta Reinhard, 1943
- Genus Histochaeta Brauer & Bergenstamm, 1891 accepted as Istocheta Rondani, 1859
- Genus Histoglossa Bezzi & Stein, 1907 accepted as Istoglossa Rondani, 1856
- Genus Histricia Rondani, 1863 accepted as Hystricia Macquart, 1843
- Genus Hobartia Malloch, 1930
- Genus Homalactia Townsend, 1915
- Genus Homalogaster Agassiz, 1846 accepted as Omalogaster Macquart, 1834
- Genus Homalostoma Brauer & Bergenstamm, 1889
- Genus Homodexia Bigot, 1885 accepted as Bengalia Robineau-Desvoidy, 1830
- Genus Homoeonychia Brauer & Bergenstamm, 1890
- Genus Homogenia Van der Wulp, 1892
- Genus Homohypochaeta Townsend, 1927
- Genus Homosaundersia Townsend, 1931
- Genus Homosaundersiops Townsend, 1931
- Genus Homotoma Bezzi in Becker-Kertész, 1907
- Genus Homotrixa Villeneuve, 1914
- Genus Hormia Agassiz, 1846 accepted as Ormia Robineau-Desvoidy, 1830
- Genus Houghia Coquillett, 1897
- Genus Huascaraya Townsend, 1914
- Genus Huascarayopsis Townsend, 1927
- Genus Huascarodexia Townsend, 1919
- Genus Hubertia Robineau-Desvoidy, 1863 accepted as Bessa Robineau-Desvoidy, 1863
- Genus Hubneria Robineau-Desvoidy, 1848
- Genus Hübneria Marschall, 1873 accepted as Huebneria Marschall, 1873
- Genus Huebneria Marschall, 1873 accepted as Hubneria Robineau-Desvoidy, 1848
- Genus Huttonobesseria Curran, 1927
- Genus Hyadesimyia Bigot, 1887
- Genus Hyalomya Robineau-Desvoidy, 1830 accepted as Phasia Latreille, 1804
- Genus Hyalomyia Macquart, 1834 accepted as Hyalomya Robineau-Desvoidy, 1830
- Genus Hyalomyiodes Bezzi in Becker-Kertész, 1907 accepted as Hyalomyodes Townsend, 1893
- Genus Hyalomyiopsis Brooks, 1945
- Genus Hyalomyodes Townsend, 1893
- Genus Hyalurgus Brauer & Bergenstamm, 1893
- Genus Hygia Mesnil in Lindner, 1952 accepted as Chaetexorista Brauer & Bergenstamm, 1895
- Genus Hygiella Mesnil, 1957
- Genus Hyleorus Aldrich, 1926
- Genus Hylotomomyia Townsend, 1916
- Genus Hyosoma Aldrich, 1934
- Genus Hypenomyia Townsend, 1919 accepted as Microchaetina Van der Wulp, 1891
- Genus Hyperaea Robineau-Desvoidy, 1863
- Genus Hyperecteina Schiner, 1861
- Genus Hypersara Villeneuve, 1935
- Genus Hypertrophocera Townsend, 1891
- Genus Hypertrophomma Townsend, 1915
- Genus Hyphantrophaga Townsend, 1892
- Genus Hypochaeta Brauer & Bergenstamm, 1890
- Genus Hypochaetopsis Townsend, 1915
- Genus Hypodoria Townsend, 1927
- Genus Hypohoughia Townsend, 1927
- Genus Hypomyothyria Townsend, 1927
- Genus Hypophorinia Townsend, 1927
- Genus Hypophylax Townsend, 1935
- Genus Hypoproxynops Townsend, 1927
- Genus Hypostema
- Genus Hypostena Meigen, 1838
- Genus Hypotachina Brauer & Bergenstamm, 1891
- Genus Hypovoria Villeneuve, 1912
- Genus Hypsomyia Cortes, 1983
- Genus Hyria Robineau-Desvoidy, 1863 accepted as Pelatachina Meade, 1894
- Genus Hystricephala Macquart, 1846
- Genus Hystrichodexia Röder, 1886
- Genus Hystricia Macquart, 1843
- Genus Hystriciella Townsend, 1915
- Genus Hystriciella Engel, 1920 accepted as Engelomyia Townsend, 1931
- Genus Hystriciopsis Townsend, 1914
- Genus Hystricovoria Townsend, 1928
- Genus Hystriomyia Portschinsky, 1881
- Genus Hystrisiphona Bigot, 1883 accepted as Hystrisyphona Bigot, 1859
- Genus Hystrisyphona Bigot, 1859
- Genus Icelia Robineau-Desvoidy, 1830
- Genus Iceliopsis Guimarães, 1976
- Genus Ichneumonops Townsend, 1908
- Genus Iconofrontina Townsend, 1931
- Genus Iconomedina Townsend, 1916
- Genus Ictericodexia Townsend, 1934
- Genus Ictericophyto Townsend, 1916
- Genus Ida Robineau-Desvoidy, 1863 accepted as Dexia Meigen, 1826
- Genus Idania Enderlein, 1936
- Genus Igneomyia Mesnil in Lindner, 1950
- Genus Ignotomyia Reinhard, 1961
- Genus Ilaesa Robineau-Desvoidy, 1863
- Genus Illa Baranov, 1938 accepted as Solomonilla Özdikmen, 2007
- Genus Imaguncula Reinhard, 1958
- Genus Imitelfa Rikhter, 1976
- Genus Imitomyia Townsend, 1912
- Genus Impeccantia Reinhard, 1961
- Genus Incamyia Townsend, 1912
- Genus Incamyiopsis Townsend, 1919
- Genus Innshanotroxis Townsend, 1932
- Genus Intrapales Villeneuve, 1938
- Genus Irengia Townsend, 1935
- Genus Irwinia Cortes, 1967
- Genus Isafarus Rikhter, 1976
- Genus Ischyrophaga Townsend, 1915
- Genus Isidotus Reinhard, 1962
- Genus Ismenia Robineau-Desvoidy, 1863
- Genus Isocarceliopsis Baranov, 1934
- Genus Isochaetina Mesnil in Lindner, 1950
- Genus Isoglossa Coquillett, 1895
- Genus Isomera Robineau-Desvoidy, 1851
- Genus Isopexopsis Sun & Zhao, 1995
- Genus Isoprosopaea Villeneuve, 1938 accepted as Isoprosopaea Townsend, 1943
- Genus Isoprosopaea Townsend, 1943 accepted as Chaetexorista Brauer & Bergenstamm, 1895
- Genus Isosturmia Townsend, 1927
- Genus Istochaeta Marschall, 1873 accepted as Istocheta Rondani, 1859
- Genus Istocheta Rondani, 1859
- Genus Istoglossa Rondani, 1856 accepted as Clausicella Rondani, 1856
- Genus Itabiomyia Townsend, 1927
- Genus Itacnephalia Townsend, 1927
- Genus Itacuphocera Townsend, 1927
- Genus Italispidea Townsend, 1927
- Genus Italydella Townsend, 1927
- Genus Itamintho Townsend, 1931
- Genus Itaplectops Townsend, 1927
- Genus Itarchytas Blanchard, 1940
- Genus Itasaundersia Townsend, 1927
- Genus Itasturmia Townsend, 1927
- Genus Itavoria Townsend, 1931
- Genus Itaxanthomelana Townsend, 1927
- Genus Iteuthelaira Townsend, 1927
- Genus Jaenimyia Townsend, 1912
- Genus Jalapamyia Reinhard, 1964
- Genus Jamacaria Curran in Gowdey, 1928
- Genus Jamaicaria Townsend, 1936 accepted as Jamacaria Curran in Gowdey, 1928
- Genus Janthinomyia Brauer & Bergenstamm, 1893
- Genus Javetia Robineau-Desvoidy, 1863 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Jaynesleskia Townsend, 1934
- Genus Jicaltepecia Townsend, 1917
- Genus Jurinea Thomson, 1868 accepted as Jurinia Robineau-Desvoidy, 1830
- Genus Jurinella Brauer & Bergenstamm, 1890
- Genus Jurinia Robineau-Desvoidy, 1830
- Genus Juriniopsis Townsend, 1916
- Genus Juriniosoma Townsend, 1927
- Genus Jurinodexia Townsend, 1915
- Genus Kaiseriola Mesnil, 1970
- Genus Kallisomyia Borisova-Zinov'eva, 1964
- Genus Kambaitimyia Mesnil, 1953
- Genus Karalliomyia Mesnil in Lindner, 1950 accepted as Koralliomyia Mesnil in Lindner, 1950
- Genus Kinabaluia Malloch, 1935
- Genus Kinangopana Emden, 1960
- Genus Kiniatiliops Mesnil, 1955
- Genus Kiniatilla Villeneuve, 1938
- Genus Kirbya Robineau-Desvoidy, 1830
- Genus Kiritshenkia Zimin, 1926
- Genus Klugia Robineau-Desvoidy, 1863
- Genus Knabia Townsend, 1915
- Genus Koralliomyia Mesnil in Lindner, 1950
- Genus Kosempomyia Villeneuve, 1932
- Genus Kosempomyiella Baranov, 1934
- Genus Kurintjimyia Townsend, 1926
- Genus Kuwanimyia Townsend, 1916
- Genus Labidigaster Meigen, 1838 accepted as Labigastera Macquart, 1834
- Genus Labidogaster Brauer & Bergenstamm, 1890 accepted as Labigastera Macquart, 1834
- Genus Labidogyne Brauer & Bergenstamm, 1890
- Genus Labigaster Macquart, 1835 accepted as Labigastera Macquart, 1834
- Genus Labigastera Macquart, 1834
- Genus Laccura Enderlein, 1936
- Genus Lachnomma Townsend, 1892
- Genus Lachnommopsis Townsend, 1915
- Genus Lachnomopsis
- Genus Lafuentemyia Marnef, 1965
- Genus Lalage Robineau-Desvoidy, 1863 accepted as Chetogena Rondani, 1856
- Genus Lambertia Robineau-Desvoidy, 1863
- Genus Lambrusca Richter, 1998
- Genus Larvaevora Meigen, 1800
- Genus Larvaevoropsis Townsend, 1916
- Genus Lasiocalypter Malloch, 1930
- Genus Lasiocalyptrina Malloch, 1930
- Genus Lasiona Van der Wulp, 1890
- Genus Lasionalia Curran, 1934
- Genus Lasioneura Coquillett, 1895
- Genus Lasiopales Villeneuve, 1922
- Genus Lasiopalpus Macquart, 1847
- Genus Latiginella Villeneuve, 1936
- Genus Latreillia Robineau-Desvoidy, 1830 accepted as Belvosia Robineau-Desvoidy, 1830
- Genus Latreillimyia Townsend, 1908 accepted as Belvosia Robineau-Desvoidy, 1830
- Genus Laufferiella Villeneuve, 1929
- Genus Laximasicera Curran, 1927
- Genus Lecanipa Rondani, 1859
- Genus Lecanipus Brauer & Bergenstamm, 1890
- Genus Leenipa Lioy, 1864
- Genus Leichenor Gistl, 1848 accepted as Baumhaueria Meigen, 1838
- Genus Leiophora Robineau-Desvoidy, 1863
- Genus Leiosia Van der Wulp, 1893
- Genus Leiosiopsis Townsend, 1927
- Genus Lejophora Bezzi in Becker-Kertész, 1907
- Genus Lepidosyntoma Becker, 1908
- Genus Leptidosophia Townsend, 1931
- Genus Leptochaeta Brauer & Bergenstamm, 1890
- Genus Leptoda Van der Wulp, 1885
- Genus Leptodexia Townsend, 1919
- Genus Leptomacquartia Townsend, 1919
- Genus Leptostylum Macquart, 1851
- Genus Leptotachina Brauer & Bergenstamm, 1891
- Genus Leptothelaira Mesnil & Shima, 1979
- Genus Leschenaultia Robineau-Desvoidy, 1830
- Genus Leschia Rondani, 1861 accepted as Leskia Robineau-Desvoidy, 1830
- Genus Leskia Robineau-Desvoidy, 1830
- Genus Leskiella James, 1947
- Genus Leskiola Mesnil, 1957
- Genus Leskiolydella Townsend, 1927
- Genus Leskiomima Brauer & Bergenstamm, 1891
- Genus Leskiopalpus Townsend, 1916
- Genus Leskiopsis Townsend, 1916
- Genus Lesnia Schiner, 1861 accepted as Leskia Robineau-Desvoidy, 1830
- Genus Lespesia Robineau-Desvoidy, 1863
- Genus Leucanipa Schiner, 1862
- Genus Leucocarcelia Villeneuve, 1921
- Genus Leucostoma Meigen, 1803
- Genus Leverella Baranov, 1934
- Genus Liancosmia Speiser in Sjöstedt, 1910
- Genus Lidella Rondani, 1859 accepted as Lydella Robineau-Desvoidy, 1830
- Genus Ligeria Robineau-Desvoidy, 1863 accepted as Bessa Robineau-Desvoidy, 1863
- Genus Ligeriella Mesnil in Lindner, 1961
- Genus Lilaea Robineau-Desvoidy, 1863
- Genus Lindigepalpus Townsend, 1931
- Genus Lindigia Townsend, 1931
- Genus Lindneriola Mesnil, 1959
- Genus Linnaemya Robineau-Desvoidy, 1830
- Genus Linnaemyia Draber-Monko & Kolomyetz, 1982
- Genus Linnemya Robineau-Desvoidy, 1863 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Linnemyia Macquart, 1835 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Liophora Bezzi & Stein, 1907 accepted as Leiophora Robineau-Desvoidy, 1863
- Genus Lispidea Coquillett, 1895
- Genus Lispideosoma Reinhard, 1943
- Genus Lissoglossa Villeneuve, 1912
- Genus Lithophasia accepted as Litophasia Girschner, 1887
- Genus Litophasia Girschner, 1887
- Genus Lixadmontia Wood & Cave, 2006
- Genus Lixinia Curran in Gowdey, 1926
- Genus Lixophaga Townsend, 1908
- Genus Lobomyia Woodley & Arnaud, 2008
- Genus Loevia Robineau-Desvoidy, 1863 accepted as Ceromasia Rondani, 1856
- Genus Loewia Egger, 1856
- Genus Loewia Herting, 1974 accepted as Loevia Robineau-Desvoidy, 1863
- Genus Lomacantha Lioy, 1864 accepted as Lomachantha Rondani, 1859
- Genus Lomachanta Schiner, 1864 accepted as Lomachantha Rondani, 1859
- Genus Lomachantha Rondani, 1859
- Genus Lomatacantha Brauer & Bergenstamm, 1889
- Genus Lophosia Meigen, 1824
- Genus Lophosiocera Townsend, 1916
- Genus Lophosiocyptera Townsend, 1927
- Genus Lophosiodes Townsend, 1927
- Genus Lophosiopsis Townsend, 1928
- Genus Lophosiosoma
- Genus Lophyromyia Brauer & Bergenstamm, 1890
- Genus Lubutana Villeneuve, 1938
- Genus Lucasia Robineau-Desvoidy, 1863
- Genus Lupia Robineau-Desvoidy, 1863
- Genus Lydella Robineau-Desvoidy, 1830
- Genus Lydellactia Townsend, 1927
- Genus Lydellina Villeneuve, 1916
- Genus Lydellohoughia Townsend, 1927
- Genus Lydellothelaira Townsend, 1919
- Genus Lydina Robineau-Desvoidy, 1830
- Genus Lydinolydella Townsend, 1927
- Genus Lygaeomyia Aldrich, 1934
- Genus Lylibaea Robineau-Desvoidy, 1863 accepted as Nilea Robineau-Desvoidy, 1863
- Genus Lyliboea Robineau-Desvoidy, 1863 accepted as Lylibaea Robineau-Desvoidy, 1863
- Genus Lypha Robineau-Desvoidy, 1830
- Genus Lyphe Coquillett, 1910 accepted as Lypha Robineau-Desvoidy, 1830
- Genus Lyphosia Mesnil, 1957
- Genus Lythia Robineau-Desvoidy, 1863 accepted as Microsoma Macquart, 1855
- Genus Machaera Mik, 1890 accepted as Macherea Rondani, 1859
- Genus Machaeraea Rondani, 1859 accepted as Macherea Rondani, 1859
- Genus Machaereea Schiner, 1862
- Genus Machaira Brauer & Bergenstamm, 1889 accepted as Macherea Rondani, 1859
- Genus Machairomasicera Townsend, 1919
- Genus Macherea Rondani, 1859
- Genus Macquartia Robineau-Desvoidy, 1830
- Genus Macrochloria Malloch, 1929
- Genus Macrohoughia Townsend, 1927
- Genus Macrohoughiopsis Townsend, 1927
- Genus Macrojurinia Townsend, 1916
- Genus Macrolophosia Brauer & Bergenstamm, 1893
- Genus Macromeigenia Brauer & Bergenstamm, 1891
- Genus Macrometopa Brauer & Bergenstamm, 1890
- Genus Macromya Robineau-Desvoidy, 1830
- Genus Macromyia Macquart, 1835 accepted as Macromya Robineau-Desvoidy, 1830
- Genus Macromyia Agassiz, 1846 accepted as Macromya Robineau-Desvoidy, 1830
- Genus Macropalpus Rondani, 1863 accepted as Spathipalpus Rondani, 1863
- Genus Macropalpus Meunier, 1893
- Genus Macropatelloa Townsend, 1931
- Genus Macropia Malloch, 1930
- Genus Macropodexia Townsend, 1932
- Genus Macroprosopa Brauer & Bergenstamm, 1890
- Genus Macrosophia Townsend, 1932
- Genus Macrozenillia Townsend, 1927
- Genus Mactomyia Reinhard, 1958
- Genus Maculosalia Mesnil, 1946
- Genus Madremyia Townsend, 1916
- Genus Magripa Richter, 1988
- Genus Mahauiella Toma, 2003
- Genus Makasinocera Townsend, 1915
- Genus Makasinocerops Townsend, 1935
- Genus Makilingimyia Townsend, 1928
- Genus Malaiocrocuta Townsend, 1932
- Genus Malaisimyia Mesnil, 1953
- Genus Malayocyptera Townsend, 1926
- Genus Malayodinera Townsend, 1926
- Genus Malayodoria Townsend, 1926
- Genus Malayomedina Townsend, 1926
- Genus Mallochiola Strand, 1932 † accepted as Deltomyza Malloch, 1931
- Genus Mallochomacquartia Townsend, 1934
- Genus Mangazea Draber-Monko & Kolomyetz, 1982
- Genus Manola Richter, 1982
- Genus Manteomasiphya Guimarães, 1966
- Genus Mapolomyia Verbeke, 1960
- Genus Maquartia Rondani, 1862 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Maracajuia Townsend, 1939
- Genus Maracasimyia Thompson, 1968
- Genus Marnefia
- Genus Marshallomyia Emden, 1960
- Genus Marshamia Robineau-Desvoidy, 1830 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Marshamya Rondani, 1850 accepted as Marshamia Robineau-Desvoidy, 1830
- Genus Marshania Robineau-Desvoidy, 1863
- Genus Marsilia Lioy, 1864 accepted as Marsillia Rondani, 1861
- Genus Marsilia Bezzi & Stein, 1907 accepted as Marsillia Rondani, 1861
- Genus Marsillia Rondani, 1861 accepted as Exorista Meigen, 1803
- Genus Masicera Macquart, 1834
- Genus Masicerella Gardner, 1940
- Genus Masiceropsis Townsend, 1916
- Genus Masiphya Brauer & Bergenstamm, 1891
- Genus Masiphyoidea Thompson, 1963
- Genus Masiphyomyia Reinhard, 1944
- Genus Masipoda Brauer & Bergenstamm, 1890
- Genus Masistyloides Mesnil, 1963
- Genus Masistylum Brauer & Bergenstamm, 1893
- Genus Mastigiomyia Reinhard, 1964
- Genus Masyphoidea Thompson, 1963 accepted as Masiphyoidea Thompson, 1963
- Genus Matucania Townsend, 1919
- Genus Mauritiodoria Townsend, 1932
- Genus Mauromyia Coquillett, 1897
- Genus Mawuphalla Lehrer, 2013 accepted as Ceracia Rondani, 1865
- Genus Mayodistichona Townsend, 1928
- Genus Mayophorinia Townsend, 1927
- Genus Mayoschizocera Townsend, 1927
- Genus Medina Robineau-Desvoidy, 1830
- Genus Medinacemyia Townsend, 1928
- Genus Medinella Malloch, 1938 accepted as Medinella Dugdale, 1969
- Genus Medinella Dugdale, 1969
- Genus Medinodexia Townsend, 1927
- Genus Medinomyia Mesnil, 1957
- Genus Medinophyto Townsend, 1927
- Genus Medinospila Mesnil, 1977
- Genus Mediosetiger Barraclough, 1983
- Genus Medoria Robineau-Desvoidy, 1830
- Genus Medoria Meigen, 1838 accepted as Medoria Robineau-Desvoidy, 1830
- Genus Medorilla Rondani, 1856 accepted as Labigastera Macquart, 1834
- Genus Megaeuloewia Townsend, 1919
- Genus Megalochaeta Brauer & Bergenstamm, 1890
- Genus Megaparia Van der Wulp, 1891
- Genus Megapariopsis Townsend, 1915
- Genus Megaprosopus Macquart, 1843
- Genus Megistodexia Townsend, 1932
- Genus Megistogaster Macquart, 1851
- Genus Megistogastropsis Townsend, 1916
- Genus Mehmetia Özdikmen, 2007
- Genus Meigenia Robineau-Desvoidy, 1830
- Genus Meigeniella Coquillett, 1902
- Genus Meigenielloides Townsend, 1919
- Genus Meigeniopsis Brauer & Bergenstamm, 1893
- Genus Melaleuca Van der Wulp, 1891
- Genus Melanactia Townsend, 1927
- Genus Melanasomyia Malloch, 1935
- Genus Melanepalpellus Townsend, 1927
- Genus Melanepalpus Townsend, 1914
- Genus Melanesomyia Barraclough, 1998
- Genus Melanesomyia Barraclough, 1997 accepted as Melanesomyia Barraclough, 1998
- Genus Melania Meigen, 1838 accepted as Phyllomya Robineau-Desvoidy, 1830
- Genus Melanocyptera Townsend, 1927
- Genus Melanodoria Townsend, 1927
- Genus Melanophrys Williston, 1886
- Genus Melanorlopteryx Townsend, 1927
- Genus Melanoromintho Townsend, 1935
- Genus Melanorophasia Townsend, 1934
- Genus Melanota Rondani, 1857 accepted as Melania Meigen, 1838
- Genus Meledonus Aldrich, 1926
- Genus Meleterus Aldrich, 1926
- Genus Melia Robineau-Desvoidy, 1830 accepted as Melisoneura Rondani, 1861
- Genus Melibaea Robineau-Desvoidy, 1848 accepted as Phebellia Robineau-Desvoidy, 1846
- Genus Meliboea Robineau-Desvoidy, 1863 accepted as Melibaea Robineau-Desvoidy, 1848
- Genus Melinocera Townsend, 1915
- Genus Melisoneura Rondani, 1861
- Genus Melizoneura Rondani, 1868 accepted as Melisoneura Rondani, 1861
- Genus Melizoneura Bezzi & Stein, 1907 accepted as Melisoneura Rondani, 1861
- Genus Mellachnus Aldrich, 1934
- Genus Mendelssohnia Kugler, 1971
- Genus Menetus Aldrich, 1926 accepted as Aldrichomyia Özdikmen, 2006
- Genus Mentho Westwood, 1840 accepted as Mintho Robineau-Desvoidy, 1830
- Genus Meriana Macquart, 1835 accepted as Meriania Robineau-Desvoidy, 1830
- Genus Meriania Robineau-Desvoidy, 1830 accepted as Panzeria Robineau-Desvoidy, 1830
- Genus Mericia Robineau-Desvoidy, 1830
- Genus Mericina Curran, 1927
- Genus Mesembrierigone Townsend, 1931
- Genus Mesembrinormia Townsend, 1931
- Genus Mesembriomintho Townsend, 1916
- Genus Mesembriophyto Townsend, 1916
- Genus Mesnilana van Emden, 1945
- Genus Mesniletta Herting, 1979
- Genus Mesnilisca Zimin, 1974
- Genus Mesnilius Özdikmen, 2006
- Genus Mesnilomyia Kugler, 1972
- Genus Mesnilus Özdikmen, 2007
- Genus Mesochaeta Brauer & Bergenstamm, 1891
- Genus Messiomyia Reinhard, 1955 accepted as Lixophaga Townsend, 1908
- Genus Metacemyia Herting, 1969
- Genus Metachaeta Coquillett, 1895
- Genus Metadexia Coquillett, 1899
- Genus Metadoria Brauer & Bergenstamm, 1893
- Genus Metadrinomyia Shima, 1980
- Genus Metagonistylum Townsend, 1927
- Genus Metagymnopsis Blanchard, 1943
- Genus Metallicomintho Townsend, 1919
- Genus Metamyia Arnaud, 1963
- Genus Metamyiophasia Blanchard, 1966
- Genus Metamyobia Townsend, 1927
- Genus Metaphorocera Thompson, 1968
- Genus Metaphryno Crosskey, 1967
- Genus Metaphyto Coquillett, 1897
- Genus Metaplagia Coquillett, 1895
- Genus Metarrhinomyia Townsend, 1927
- Genus Metatachina Townsend, 1919
- Genus Metavoria Townsend, 1915
- Genus Methypostena Townsend, 1908
- Genus Metopiops Townsend, 1912
- Genus Metopiopsis Vimmer & Soukup, 1940
- Genus Metopoactia Townsend, 1927
- Genus Metopomintho Townsend, 1927
- Genus Metopomuscopteryx Townsend, 1915
- Genus Metoposisyrops Townsend, 1916
- Genus Metopotachina Townsend, 1915
- Genus Miamimyia Townsend, 1916
- Genus Miamimyiops Townsend, 1939
- Genus Michrochaetona Townsend, 1919 accepted as Microchaetona Townsend, 1919
- Genus Micra Zetterstedt, 1838
- Genus Microaporia Townsend, 1919
- Genus Microcarcelia Baranov, 1934
- Genus Microceromacia Curran, 1934 accepted as Microceromasia Villeneuve, 1911
- Genus Microceromasia Villeneuve, 1911
- Genus Microcerophina Kugler, 1977
- Genus Microchaetina Van der Wulp, 1891
- Genus Microchaetogyne Townsend, 1931
- Genus Microchaetona Townsend, 1919
- Genus Microchaetonops Townsend, 1934
- Genus Microcheilosia Macquart, 1855
- Genus Microchira Brauer & Bergenstamm, 1893
- Genus Microerigone Zimin, 1960
- Genus Microgymnomma Townsend, 1916
- Genus Microhystricia Malloch, 1938
- Genus Microleskia Thompson, 1968
- Genus Micromasiphya Townsend, 1934
- Genus Micromintho Townsend, 1919
- Genus Micromyiobia Bezzi in Becker-Kertész, 1907
- Genus Micromyobia Brauer & Bergenstamm, 1891
- Genus Micronychia Brauer & Bergenstamm, 1890
- Genus Micronychiops Townsend, 1915
- Genus Micropales Villeneuve, 1927
- Genus Micropalpis Macquart, 1834
- Genus Micropalpus Macquart, 1835 accepted as Micropalpis Macquart, 1834
- Genus Microphana Brauer & Bergenstamm, 1891
- Genus Microphthalma Macquart, 1843
- Genus Microptera Robineau-Desvoidy, 1830 accepted as Leiophora Robineau-Desvoidy, 1863
- Genus Microsciasma Townsend, 1915
- Genus Microsillus Aldrich, 1926
- Genus Microsoma Macquart, 1855
- Genus Microtownsendia Curran, 1934
- Genus Microtricha Mik, 1887
- Genus Microtrichodes Macquart, 1846
- Genus Microtrichommodes Townsend, 1927
- Genus Microtrihodes
- Genus Microtropesa Macquart, 1846
- Genus Microtropeza Macquart, 1851 accepted as Microtropesa Macquart, 1846
- Genus Mijobia Doleschall, 1856 accepted as Solieria Robineau-Desvoidy, 1849
- Genus Mikia Kowarz, 1885
- Genus Mikiella Meunier, 1894
- Genus Milada Rikhter, 1973
- Genus Milonius Reinhard, 1955
- Genus Mimologus Reinhard, 1955
- Genus Mimomeriania Zimin, 1960
- Genus Minella Robineau-Desvoidy, 1830 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Mintho Robineau-Desvoidy, 1830
- Genus Minthocyptera Townsend, 1926
- Genus Minthodes Brauer & Bergenstamm, 1889
- Genus Minthodexia Brauer & Bergenstamm, 1891
- Genus Minthodexiopsis Townsend, 1927
- Genus Minthohoughia Townsend, 1919
- Genus Mintholeskia Townsend, 1934
- Genus Minthomima Townsend, 1927
- Genus Minthomyia Townsend, 1919
- Genus Minthoplagia Townsend, 1915
- Genus Minthopsis Townsend, 1915
- Genus Minthosoma Zeegers, 2007
- Genus Minthotachina Townsend, 1935
- Genus Minthoxia Mesnil, 1968
- Genus Minthozelia Townsend, 1919
- Genus Mitannia Herting, 1987
- Genus Mochlosoma Brauer & Bergenstamm, 1890
- Genus Mollia Robineau-Desvoidy, 1863 accepted as Medina Robineau-Desvoidy, 1830
- Genus Molliopsis Townsend, 1932 accepted as Medina Robineau-Desvoidy, 1830
- Genus Mongolomintho Rikhter, 1976
- Genus Monoestrogaster Townsend, 1939
- Genus Monoleptophaga Baranov, 1938
- Genus Montanarturia Miller, 1945
- Genus Montanothalma Barraclough, 1996
- Genus Montserratia Thompson, 1964
- Genus Moreiria Townsend, 1932
- Genus Mormonomyia Brauer & Bergenstamm, 1891
- Genus Morphodexia Townsend, 1931
- Genus Morphomya Rondani, 1856 accepted as Stomina Robineau-Desvoidy, 1830
- Genus Morphomyia Rondani, 1862 accepted as Morphomya Rondani, 1856
- Genus Munira Rikhter, 1974
- Genus Murana Meigen, 1824
- Genus Murdockiana Townsend, 1916
- Genus Muscinothelaira Townsend, 1916
- Genus Muscopteryx Townsend, 1892
- Genus Myatelemus Reinhard, 1967
- Genus Myconia Robineau-Desvoidy, 1863
- Genus Mycteromyia Mesnil in Lindner, 1950 accepted as Mycteromyiella Mesnil, 1965
- Genus Mycteromyiella Mesnil, 1965
- Genus Myersimyia Townsend, 1935
- Genus Myiobia Mik, 1890 accepted as Myobia Robineau-Desvoidy, 1830
- Genus Myiocera Bezzi, 1906 accepted as Myocera Robineau-Desvoidy, 1830
- Genus Myiocera Rondani, 1868 accepted as Myocera Robineau-Desvoidy, 1830
- Genus Myiochaeta Cortes, 1967
- Genus Myioclonia Reinhard, 1945
- Genus Myioclura Reinhard, 1975
- Genus Myiodexia
- Genus Myiodoria Townsend, 1927
- Genus Myiodoriops Townsend, 1935
- Genus Myiofijia Baranov, 1934
- Genus Myiomima Brauer & Bergenstamm, 1890
- Genus Myiomintho Brauer & Bergenstamm, 1890
- Genus Myiopharus Brauer & Bergenstamm, 1890
- Genus Myiophasia Brauer & Bergenstamm, 1891
- Genus Myiophasiopsis Townsend, 1927
- Genus Myioscotiptera Giglio-Tos, 1893
- Genus Myiostoma Bezzi in Becker-Kertész, 1907 accepted as Myostoma Robineau-Desvoidy, 1830
- Genus Myiosturmia Townsend, 1927
- Genus Myiosturmiopsis Thompson, 1963
- Genus Myiothyria Giglio-Tos, 1894 accepted as Myothyria Van der Wulp, 1890
- Genus Myiotrixa Brauer & Bergenstamm, 1893
- Genus Myioxynops Townsend, 1927
- Genus Myntho Rondani, 1845 accepted as Mintho Robineau-Desvoidy, 1830
- Genus Myoba Blanchard, 1845 accepted as Solieria Robineau-Desvoidy, 1849
- Genus Myobia Robineau-Desvoidy, 1830 accepted as Anthoica Rondani, 1861
- Genus Myobia Macquart, 1834 accepted as Solieria Robineau-Desvoidy, 1849
- Genus Myobiomima Townsend, 1926
- Genus Myobiopsis Townsend, 1916
- Genus Myocena Lioy, 1864 accepted as Myocera Robineau-Desvoidy, 1830
- Genus Myocera Robineau-Desvoidy, 1830 accepted as Dinera Robineau-Desvoidy, 1830
- Genus Myoceropsis Townsend, 1915
- Genus Myostoma Robineau-Desvoidy, 1830 accepted as Estheria Robineau-Desvoidy, 1830
- Genus Myothryia
- Genus Myothyria Van der Wulp, 1890
- Genus Myothyriopsis Townsend, 1919
- Genus Myrsina Robineau-Desvoidy, 1863 accepted as Bessa Robineau-Desvoidy, 1863
- Genus Mystacella Wulp, 1890
- Genus Mystacomyia Giglio-Tos, 1893
- Genus Mystacomyoidea Thompson, 1963
- Genus Myxactia Villeneuve, 1915
- Genus Myxarchiclop
- Genus Myxarchiclops Villeneuve, 1916
- Genus Myxexorista Brauer & Bergenstamm, 1891
- Genus Myxexoristops Townsend, 1911
- Genus Myxhypostena Villeneuve, 1939
- Genus Myxocarcelia Baranov, 1934
- Genus Naeera Gobert, 1887 accepted as Neaera Robineau-Desvoidy, 1830
- Genus Naira Richter, 1971
- Genus Nanoplagia Villeneuve, 1929
- Genus Nardia Cerretti, 2009
- Genus Neacroglossa Townsend, 1927
- Genus Neadmontia Townsend, 1912
- Genus Neaera Robineau-Desvoidy, 1830
- Genus Nealsomyia Mesnil, 1939
- Genus Neaphria Townsend, 1914
- Genus Neaporia Townsend, 1908 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Nearchus Reinhard, 1964
- Genus Neargyrophylax Townsend, 1927
- Genus Neera Rondani, 1861 accepted as Neaera Robineau-Desvoidy, 1830
- Genus Nemochaeta Van der Wulp, 1888
- Genus Nemora Stein, 1857 accepted as Nemoraea Robineau-Desvoidy, 1830
- Genus Nemoraea Robineau-Desvoidy, 1830
- Genus Nemorea Macquart, 1834 accepted as Nemoraea Robineau-Desvoidy, 1830
- Genus Nemorilla Rondani, 1856
- Genus Nemorilloides Brauer & Bergenstamm, 1891
- Genus Nemoroea Macquart, 1851 accepted as Nemoraea Robineau-Desvoidy, 1830
- Genus Nemosturmia Townsend, 1926
- Genus Neoacroglossa
- Genus Neoarchytas Townsend, 1915
- Genus Neoargyrophylax
- Genus Neobelvosiopsis Blanchard, 1954
- Genus Neobrachelia Townsend, 1931
- Genus Neocampylochaeta Townsend, 1927
- Genus Neocelatoria Walton, 1914
- Genus Neochaetoplagia Blanchard, 1963
- Genus Neocraspedothrix Townsend, 1927
- Genus Neocuphocera Townsend, 1927
- Genus Neocyptera Townsend, 1916
- Genus Neocyrtophoeba Vimmer & Soukup, 1940
- Genus Neodichocera Walton, 1914
- Genus Neodionaea Townsend, 1916
- Genus Neoduvaucelia Malloch, 1931
- Genus Neodwaucelia
- Genus Neoemdenia Mesnil, 1953
- Genus Neoerigone Townsend, 1919
- Genus Neoerythronychia Malloch, 1932
- Genus Neoethilla Cerretti, Wood & O'Hara, 2012
- Genus Neoeuantha Townsend, 1931
- Genus Neofischeria Townsend, 1908
- Genus Neogymnomma Townsend, 1915
- Genus Neojurinia Townsend, 1914
- Genus Neolophosia Townsend, 1939
- Genus Neolydella Mesnil, 1939
- Genus Neomasiphya Guimarães, 1966
- Genus Neomedina Malloch, 1935
- Genus Neometachaeta Townsend, 1915
- Genus Neomintho Brauer & Bergenstamm, 1891
- Genus Neominthoidea Thompson, 1968
- Genus Neominthopsis Townsend, 1915
- Genus Neomoraea accepted as Nemoraea Robineau-Desvoidy, 1830
- Genus Neomyostoma Townsend, 1935
- Genus Neonyctia Townsend, 1919
- Genus Neopaedarium Blanchard, 1943
- Genus Neopales Coquillet, 1910
- Genus Neophasia Brauer & Bergenstamm, 1893 † accepted as Neximyia Crosskey, 1967 †
- Genus Neophasmophaga Guimarães, 1982
- Genus Neophorichaeta Smith, 1915
- Genus Neophorocera Townsend, 1912
- Genus Neophryxe Townsend, 1916
- Genus Neophyllophila Townsend, 1927
- Genus Neoplectops Malloch, 1930
- Genus Neopodomyia Townsend, 1927
- Genus Neoprosena Townsend, 1927
- Genus Neopsalida Townsend, 1916
- Genus Neopsalidopteryx Brooks, 1942
- Genus Neoptera Van der Wulp, 1890
- Genus Neosarromyia Townsend, 1927
- Genus Neoscotia Townsend, 1919
- Genus Neosolieria Townsend, 1927
- Genus Neosophia Guimarães, 1982
- Genus Neossarromyia
- Genus Neotachina Malloch, 1938
- Genus Neothelaira Townsend, 1912
- Genus Neotractocera Townsend, 1892
- Genus Neotrafoia Townsend, 1912
- Genus Neotrafoiopsis Townsend, 1931
- Genus Neotryphera Malloch, 1938
- Genus Neouromyia Townsend, 1891
- Genus Neowinthemia Townsend, 1919
- Genus Neoxanthobasis Blanchard, 1966
- Genus Neoxynops Townsend, 1934
- Genus Neoxynopsoidea Thompson, 1968
- Genus Nephochaetona Townsend, 1919
- Genus Nephoplagia Townsend, 1919
- Genus Nephopteropsis Townsend, 1916
- Genus Nepocarcelia Townsend, 1927
- Genus Nepophasmophaga Townsend, 1927
- Genus Neuromyia Bezzi in Becker-Kertész, 1907
- Genus Neximyia Crosskey, 1967 †
- Genus Nicaea Robineau-Desvoidy, 1863 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Nicephorus Reinhard, 1944
- Genus Nicetria Reinhard, 1953
- Genus Nigara Richter, 1999
- Genus Nigrilypha O'Hara, 2002
- Genus Nigrina Robineau-Desvoidy, 1863
- Genus Nigrobonellia Brooks, 1944
- Genus Nilea Robineau-Desvoidy, 1863
- Genus Nimiocauda Reinhard, 1943
- Genus Nimioglossa Reinhard, 1945
- Genus Nipponoceromyia Mesnil & Shima, 1978
- Genus Nothovoria Cortés & Chr. González in Cortés & González, 1989
- Genus Nothypostena Mesnil, 1957
- Genus Notoderus
- Genus Notodytes Aldrich, 1934
- Genus Notomanes Aldrich, 1934
- Genus Novia Robineau-Desvoidy, 1830
- Genus Nowickia Wachtl, 1894
- Genus Obeida Robineau-Desvoidy, 1863
- Genus Oberonomyia Reinhard, 1964
- Genus Oblitoneura Mesnil, 1975
- Genus Obolocera Townsend, 1919
- Genus Obscuromyia Barraclough & O'Hara, 1998
- Genus Ocalea Robineau-Desvoidy, 1863 accepted as Wagneria Robineau-Desvoidy, 1830
- Genus Occisor Hutton, 1901
- Genus Ochrocera Townsend, 1916
- Genus Ochroepalpus Townsend, 1927
- Genus Ochromeigenia Townsend, 1919
- Genus Ochrophasia Townsend, 1927
- Genus Ociptera Rondani, 1862 accepted as Ocyptera Latreille, 1804
- Genus Ocyptea Fallen, 1810 accepted as Ocyptera Latreille, 1804
- Genus Ocyptera Latreille, 1804
- Genus Ocyptera Robineau-Desvoidy, 1830 accepted as Ocyptera Latreille, 1804
- Genus Ocypterodes Townsend, 1916
- Genus Ocypteromima Townsend, 1916
- Genus Ocypterosipha Townsend, 1894
- Genus Ocypterosoma Townsend, 1915
- Genus Ocypterula Rondani, 1856 accepted as Cylindromyia Meigen, 1803
- Genus Ocypteryx Townsend, 1931
- Genus Ocypteryx Leach, 1817 accepted as Ocyptera Latreille, 1804
- Genus Ocyrtosoma Townsend, 1912
- Genus Ocytata Gistl, 1848
- Genus Odontocyptera Townsend, 1915
- Genus Oedemamedina Townsend, 1927
- Genus Oedemasoma Townsend, 1908
- Genus Oedemasonia Curran, 1934
- Genus Oedematocera Townsend, 1916
- Genus Oedematopteryx Townsend, 1916
- Genus Oestrocharis Villeneuve, 1927
- Genus Oestrogaster Townsend, 1912
- Genus Oestrogastrodes Townsend, 1915
- Genus Oestrogastropsis Townsend, 1915
- Genus Oestrohystricia Townsend, 1912
- Genus Oestroloewia Mesnil, 1953
- Genus Oestrophasia Brauer & Bergenstamm, 1890
- Genus Oestrophasiana Townsend, 1931
- Genus Oestroplagia Townsend, 1919
- Genus Oestropsis Townsend, 1912
- Genus Okanagania Townsend, 1915
- Genus Okea Townsend, 1916
- Genus Okeopsis Townsend, 1927
- Genus Ola Paramonov, 1968
- Genus Olbya Robineau-Desvoidy, 1863 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Olenochaeta Townsend, 1892
- Genus Oligoestrus
- Genus Oligolydella Townsend, 1927
- Genus Oligooestrus Townsend, 1932
- Genus Olinda Robineau-Desvoidy, 1830
- Genus Olindopsis Townsend, 1927
- Genus Olista Gobert, 1887 accepted as Clista Meigen, 1838
- Genus Oliviera Macquart, 1835 accepted as Olivieria Robineau-Desvoidy, 1830
- Genus Olivieria Robineau-Desvoidy, 1830 accepted as Eriothrix Meigen, 1803
- Genus Olivieria Meigen, 1838 accepted as Olivieria Robineau-Desvoidy, 1830
- Genus Ollachactia Townsend, 1927
- Genus Ollachea Townsend, 1919
- Genus Ollacheryphe Townsend, 1927
- Genus Omalogaster Macquart, 1834
- Genus Omalostoma Rondani, 1862 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Ommaleskia Townsend, 1917
- Genus Ommasicera Townsend, 1911
- Genus Omotoma Lioy, 1864
- Genus Onychogonia Brauer & Bergenstamm, 1890
- Genus Oodigaster Macquart, 1854
- Genus Oomasicera
- Genus Oomeigenia Townsend, 1915
- Genus Oömeigenia Townsend, 1915 accepted as Oomeigenia Townsend, 1915
- Genus Opesia Robineau-Desvoidy, 1863
- Genus Ophina Robineau-Desvoidy, 1863 accepted as Linnaemya Robineau-Desvoidy, 1830
- Genus Ophirion Townsend, 1911
- Genus Ophirionopsis Townsend, 1927
- Genus Ophirodexia Townsend, 1911
- Genus Ophirosturmia Townsend, 1911
- Genus Oppia Robineau-Desvoidy, 1863 accepted as Prooppia Townsend, 1926
- Genus Opsocyptera Townsend, 1927
- Genus Opsoempheria Townsend, 1927
- Genus Opsoleskia Townsend, 1919
- Genus Opsomeigenia Townsend, 1919
- Genus Opsophagus Aldrich, 1926
- Genus Opsophasiopteryx Townsend, 1917
- Genus Opsosturmia
- Genus Opsotheresia Townsend, 1919
- Genus Opsozelia Townsend, 1919
- Genus Opticopteryx Townsend, 1931
- Genus Oraeosoma
- Genus Oraphasmophaga Reinhard, 1958
- Genus Orasturmia Reinhard, 1947
- Genus Orectocera Van der Wulp, 1881
- Genus Orectocerina Malloch, 1924
- Genus Oreophyto Townsend, 1916
- Genus Orestilla Reinhard, 1944
- Genus Oretocerina
- Genus Organomyia Townsend, 1915
- Genus Oria Robineau-Desvoidy, 1863
- Genus Orillia Robineau-Desvoidy, 1849
- Genus Orilliopsis Townsend, 1928
- Genus Ormia Robineau-Desvoidy, 1830
- Genus Ormiominda Paramonov, 1955
- Genus Ormiophasia Townsend, 1919
- Genus Orohoughia Townsend, 1934
- Genus Oromasiphya Townsend, 1927
- Genus Orophorocera Townsend, 1927
- Genus Orphanotrophus Reinhard, 1943
- Genus Orthaporia Townsend, 1919
- Genus Orthosia Reinhard, 1944 accepted as Orthosimyia Reinhard, 1944
- Genus Orthosimyia Reinhard, 1944
- Genus Osmaea Robineau-Desvoidy, 1830 accepted as Triarthria Stephens, 1829
- Genus Osmina Robineau-Desvoidy, 1863 accepted as Bessa Robineau-Desvoidy, 1863
- Genus Ossidingia Townsend, 1919
- Genus Ostracophyto Townsend, 1915
- Genus Oswaldia Robineau-Desvoidy, 1863
- Genus Otomasicera Townsend, 1912
- Genus Oxapampoelpalpus accepted as Oxapampoepalpus Townsend, 1931
- Genus Oxapampoepalpus Townsend, 1931
- Genus Oxexorista Townsend, 1912
- Genus Oxyaporia Townsend, 1919
- Genus Oxydexia Bigot, 1885 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Oxydexiops Townsend, 1927
- Genus Oxydosphyria Townsend, 1926
- Genus Oxyepalpus Townsend, 1927
- Genus Oxymedoria Villeneuve, 1916
- Genus Oxynops Townsend, 1912
- Genus Oxynopsalia Curran, 1934
- Genus Oxynopsis Townsend, 1927
- Genus Oxyophirion Townsend, 1927
- Genus Oxyphyllomyia Villeneuve, 1937
- Genus Oxyrutilia Townsend, 1926
- Genus Pachycephala Lioy, 1864 accepted as Baumhaueria Meigen, 1838
- Genus Pachychaeta Bezzi, 1906 accepted as Pachycheta Portschinsky, 1881
- Genus Pachycheta Portschinsky, 1881 accepted as Barychaeta Bezzi, 1906
- Genus Pachymia Walker, 1858 accepted as Pachymyia Macquart, 1843
- Genus Pachymyia Macquart, 1843
- Genus Pachynocera Townsend, 1919
- Genus Pachystylum Macquart, 1848
- Genus Pacidianus Reinhard, 1943
- Genus Paedarium Aldrich, 1926
- Genus Palamera Herting, 1969 †
- Genus Palasia Rondani, 1862 accepted as Pallasia Robineau-Desvoidy, 1830
- Genus Pales Robineau-Desvoidy, 1830
- Genus Palesisa Villeneuve, 1929
- Genus Palexorista Townsend, 1921
- Genus Palia Curran, 1927
- Genus Paliana Curran, 1927
- Genus Palilogia Reinhard, 1964
- Genus Pallasia Robineau-Desvoidy, 1830 accepted as Cistogaster Latreille in Cuvier, 1829
- Genus Palmonia Kugler, 1972
- Genus Palpexorista Townsend, 1926
- Genus Palpibraca Rondani, 1846 accepted as Peleteria Robineau-Desvoidy, 1830
- Genus Palpina Malloch, 1927
- Genus Palpocyptera Townsend, 1927
- Genus Palpolinnaemyia Townsend, 1927
- Genus Palpostoma Robineau-Desvoidy, 1830
- Genus Palpostomotrixa Townsend, 1927
- Genus Palpotachina Townsend, 1915
- Genus Palpozenillia Townsend, 1934
- Genus Pammaerus Aldrich, 1927
- Genus Pamphagophaga Enderlein, 1930
- Genus Panacemyia Townsend, 1919
- Genus Pancala Enderlein, 1936
- Genus Pandelleia Villeneuve, 1907
- Genus Pantagathus Reinhard, 1935
- Genus Panzeria Robineau-Desvoidy, 1830
- Genus Panzeria Meigen, 1838 accepted as Panzeria Robineau-Desvoidy, 1830
- Genus Panzerina Zetterstedt, 1852 accepted as Panzeria Robineau-Desvoidy, 1830
- Genus Panzeriopsis Townsend, 1915
- Genus Parabelvosia Blanchard, 1954
- Genus Parabillaea Blanchard, 1937
- Genus Parabothria Vimmer & Soukup, 1940
- Genus Parabrachycoma Blanchard, 1940
- Genus Parachaeta Coquillett, 1897
- Genus Parachaetopsis Blanchard, 1959
- Genus Parachetolyga Bischof, 1904
- Genus Parachrysoma Becker, 1918 accepted as Chrysocosmius Bezzi, 1907
- Genus Paraclara Bezzi, 1908
- Genus Paracraspedothrix Villeneuve, 1920
- Genus Paracyrillia Strobl, 1893
- Genus Paradejeania Brauer & Bergenstamm, 1893
- Genus Parademoticus Townsend, 1916
- Genus Paradexodes Townsend, 1908
- Genus Paradidyma Brauer & Bergenstamm, 1891
- Genus Paradionaea Townsend, 1916
- Genus Paradmontia Coquillett, 1902
- Genus Paradoria Brauer & Bergenstamm, 1891
- Genus Paradrino Mesnil, 1949 & 1951
- Genus Paraerynnia Brauer & Bergenstamm, 1890
- Genus Paraexorista Brauer & Bergenstamm, 1890
- Genus Parafabricia Brauer & Bergenstamm, 1895
- Genus Parafischeria Townsend, 1908
- Genus Parafrontina Brauer & Bergenstamm, 1893
- Genus Paragaedia Brauer & Bergenstamm, 1891
- Genus Paragermaria Townsend, 1909
- Genus Paragonia Mesnil in Lindner, 1949 accepted as Mesnilius Özdikmen, 2006
- Genus Paragonia Mesnil in Lindner, 1950 accepted as Mesnilius Özdikmen, 2006
- Genus Paragymnomma Brauer & Bergenstamm, 1891
- Genus Parahypostena Strobl, 1899
- Genus Parahyria Bischof, 1900
- Genus Parajurinia Townsend, 1928
- Genus Paralispe Brauer & Bergenstamm, 1891
- Genus Paralispidea Townsend, 1915
- Genus Parallophora Bezzi in Becker-Kertész, 1907
- Genus Paralophora Girschner, 1887
- Genus Paralypha Mesnil, 1963
- Genus Parameigenia Townsend, 1919
- Genus Paramesochaeta Brauer & Bergenstamm, 1891
- Genus Paramuscopteryx Townsend, 1915
- Genus Paramyiostoma Villeneuve, 1911
- Genus Paramyocera Townsend, 1915
- Genus Paranaphora Townsend, 1908
- Genus Paraneaera Brauer & Bergenstamm, 1891
- Genus Paranetia Townsend, 1927
- Genus Paranoxynops Thompson, 1968
- Genus Parapales Mesnil in Lindner, 1950
- Genus Parapexopsis Mesnil in Lindner, 1953
- Genus Paraphalloides Lehrer, 2013 accepted as Pales Robineau-Desvoidy, 1830
- Genus Paraphania Brauer & Bergenstamm, 1890
- Genus Paraphasia Townsend, 1915
- Genus Paraphasiana Townsend, 1940
- Genus Paraphasiopsis Townsend, 1917
- Genus Paraphasmophaga Townsend, 1915
- Genus Paraphorantha Townsend, 1915
- Genus Paraphorocera Brauer & Bergenstamm, 1890
- Genus Paraplagia Brauer & Bergenstamm, 1891
- Genus Parapodomyia Mesnil, 1952 accepted as Parapodomyia Mesnil, 1956
- Genus Parapodomyia Mesnil, 1956 accepted as Chaetexorista Brauer & Bergenstamm, 1895
- Genus Parapoliops Blanchard, 1957
- Genus Paraporia Townsend, 1912 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Paraprosena Brauer & Bergenstamm, 1890
- Genus Paraprospherysa Townsend, 1927
- Genus Parapsalida Townsend, 1916
- Genus Pararchytas Brauer & Bergenstamm, 1895
- Genus Pararondania Villeneuve, 1916
- Genus Pararrhinactia Townsend, 1935
- Genus Parasetigena Brauer & Bergenstamm, 1891
- Genus Parastauferia Pokorny, 1893
- Genus Parasteinia Cockerell, 1905 accepted as Tetramerinx Berg, 1898
- Genus Paratachina Brauer & Bergenstamm, 1891
- Genus Paratacta Reinhard, 1923
- Genus Paratactopsis Townsend, 1917
- Genus Paratamiclea Villeneuve, 1936
- Genus Parathelaira Townsend, 1919
- Genus Paratheresia Townsend, 1915
- Genus Paratrixa Brauer & Bergenstamm, 1891
- Genus Paratropeza Paramonov, 1964
- Genus Paratryphera Brauer & Bergenstamm, 1891
- Genus Paravibrissina Shima, 1979
- Genus Paraxanthobasis Blanchard, 1966
- Genus Parazelia Townsend, 1919 accepted as Cesapanama Koçak & Kemal, 2010
- Genus Parcipromus Reinhard, 1958
- Genus Parechinotachina Townsend, 1931
- Genus Parepalpodes Townsend, 1915
- Genus Parepalpus Coquillett, 1902
- Genus Parerigone Brauer, 1898
- Genus Parerigonesis Chao & Sun in Chao, Sun & Zhou, 1990
- Genus Pareriothrix Belanovsky, 1953 accepted as Eriothrix Meigen, 1803
- Genus Parerynnia Brauer & Bergenstamm, 1889
- Genus Parestheria Stein, 1924
- Genus Pareupogona Townsend, 1916
- Genus Parexorista Brauer & Bergenstamm, 1889
- Genus Parexoristina Enderlein, 1936 accepted as Parexoristina Anonymous, 1937
- Genus Parexoristina Anonymous, 1937 accepted as Hubneria Robineau-Desvoidy, 1848
- Genus Parhamaxia Mesnil, 1967
- Genus Parkerella Townsend, 1942
- Genus Parkeriellus Smith, 1916
- Genus Parodomyia Townsend, 1917
- Genus Parodomyiops Townsend, 1935
- Genus Paropesia Mesnil, 1970
- Genus Paropsivora Malloch, 1934
- Genus Parthenia Robineau-Desvoidy, 1830 accepted as Cylindromyia Meigen, 1803
- Genus Patelloa Townsend, 1916
- Genus Patelloapsis Townsend, 1927
- Genus Pateloa Curran, 1934 accepted as Patelloa Townsend, 1916
- Genus Patillalia Curran, 1934
- Genus Patulifrons Barraclough, 1992
- Genus Paulipalpus Barraclough, 1992
- Genus Paxiximyia Toma & Olivier, 2018
- Genus Pelashyria Villeneuve, 1935
- Genus Pelatachina Meade, 1894
- Genus Pelecotheca Townsend, 1919
- Genus Peleteria Robineau-Desvoidy, 1830
- Genus Peleteriopsis Townsend, 1916
- Genus Peletieria Bezzi, 1906 accepted as Peleteria Robineau-Desvoidy, 1830
- Genus Pelixia Curran, 1934
- Genus Pelmatomyia Brauer & Bergenstamm, 1890
- Genus Pelus Gistl, 1848 accepted as Servillia Robineau-Desvoidy, 1830
- Genus Pelycops Aldrich, 1934
- Genus Pennapoda Townsend, 1897
- Genus Pentamyia Brauer & Bergenstamm, 1890
- Genus Pentatomophaga Meijere, 1917
- Genus Penthosia Van der Wulp, 1892
- Genus Penthosiosoma Townsend, 1926
- Genus Peracroglossa Townsend, 1931
- Genus Peremptor Hutton, 1900
- Genus Periarchiclops Villeneuve, 1924
- Genus Peribaea Robineau-Desvoidy, 1863
- Genus Perichaeta Brauer & von Bergenstamm, 1889 accepted as Pericheta Rondani, 1859
- Genus Perichaeta Herting, 1984 accepted as Pericheta Rondani, 1859
- Genus Perichoeta Bezzi, 1894 accepted as Pericheta Rondani, 1859
- Genus Periechusa Gistl, 1848
- Genus Perigymnosoma Villeneuve, 1929
- Genus Perilophosia Villeneuve, 1927
- Genus Perioptichochaeta
- Genus Periopticochaeta Townsend, 1927
- Genus Periostoma
- Genus Periprosena Villeneuve, 1938
- Genus Periscepsia Gistl, 1848
- Genus Peristasisea Villeneuve, 1934
- Genus Perlucidina Mesnil in Lindner, 1952 accepted as Calozenillia Townsend, 1927
- Genus Perrissina Malloch, 1938
- Genus Perrissinoides Dugdale, 1961
- Genus Persedea Richter, 2001
- Genus Perua Townsend, 1912
- Genus Perumyia Arnaud, 1963
- Genus Petagnia Rondani, 1856
- Genus Peteina Meigen, 1838
- Genus Petia Coquillett, 1910
- Genus Petina Bezzi in Becker-Kertész, 1907 accepted as Peteina Meigen, 1838
- Genus Petinarctia Villeneuve, 1928
- Genus Petinops Brauer & Bergenstamm, 1891
- Genus Petrargyrops Townsend, 1927
- Genus Pexoides
- Genus Pexomyia Brauer & Bergenstamm, 1891
- Genus Pexopsis Brauer & Bergenstamm, 1890
- Genus Peyitschia
- Genus Peyritschia Brauer & Bergenstamm, 1890
- Genus Phaedima Robineau-Desvoidy, 1863 accepted as Oswaldia Robineau-Desvoidy, 1863
- Genus Phaenopsis Townsend, 1912
- Genus Phaeodema Aldrich, 1934
- Genus Phalacrophyto Townsend, 1915
- Genus Phanemia Macquart, 1835 accepted as Phanemya Robineau-Desvoidy, 1830
- Genus Phanemya Robineau-Desvoidy, 1830 accepted as Clairvillia Robineau-Desvoidy, 1830
- Genus Phanemyia Agassiz, 1846 accepted as Phanemya Robineau-Desvoidy, 1830
- Genus Phania Meigen, 1824
- Genus Phaniola Mesnil, 1978
- Genus Phaniomyia Brauer & Bergenstamm, 1893 accepted as Phanemya Robineau-Desvoidy, 1830
- Genus Phaniosoma Rondani, 1856 accepted as Besseria Robineau-Desvoidy, 1830
- Genus Phanisioma Lioy, 1864
- Genus Phantasiomyia Townsend, 1915
- Genus Phantasiosiphona Townsend, 1915
- Genus Phaoniella Malloch, 1938
- Genus Phasia Latreille, 1804
- Genus Phasiatacta Townsend, 1911
- Genus Phasioclista Townsend, 1891
- Genus Phasiocyptera Townsend, 1927
- Genus Phasiodexia Townsend, 1925
- Genus Phasiomyia Townsend, 1915
- Genus Phasioormia Townsend, 1932
- Genus Phasiophyto Townsend, 1919
- Genus Phasiops Coquillett, 1899
- Genus Phasiopsis Townsend, 1912
- Genus Phasiopteryx Brauer & Bergenstamm, 1890
- Genus Phasiostoma Townsend, 1915
- Genus Phasmofrontina Townsend, 1931
- Genus Phasmophaga Townsend, 1909
- Genus Phasmovora Cortes, 1968
- Genus Phebellia Robineau-Desvoidy, 1846
- Genus Phegea Robineau-Desvoidy, 1863 accepted as Zaira Robineau-Desvoidy, 1830
- Genus Phenicellia Robineau-Desvoidy, 1863 accepted as Thelaira Robineau-Desvoidy, 1830
- Genus Pherecida Robineau-Desvoidy, 1863 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Phericia Robineau-Desvoidy, 1863 accepted as Dufouria Robineau-Desvoidy, 1830
- Genus Philea Robineau-Desvoidy, 1863 accepted as Ptesiomyia Brauer & Bergenstamm, 1893
- Genus Philippodexia Townsend, 1926
- Genus Philippodoria Townsend, 1928
- Genus Philippoformosia Townsend, 1927
- Genus Philippolophosia Townsend, 1928
- Genus Phillophilopsis Curran, 1934 accepted as Phyllophilopsis Townsend, 1915
- Genus Philocalia Reinhard, 1939
- Genus Philocorus
- Genus Phirocera Segvelt, 1881 accepted as Phorocera Robineau-Desvoidy, 1830
- Genus Phitomyptera Lioy, 1864 accepted as Phytomyptera Rondani, 1845
- Genus Phobetromyia Reinhard, 1964
- Genus Phoenicella Mik & Wachtl, 1895 accepted as Phenicellia Robineau-Desvoidy, 1863
- Genus Phoeniciomyia Townsend, 1915
- Genus Pholoe Robineau-Desvoidy, 1863 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Phonia Blanchard, 1845 accepted as Phania Meigen, 1824
- Genus Phonomyia Brauer & Bergenstamm, 1893
- Genus Phorantha Rondani, 1861 accepted as Phasia Latreille, 1804
- Genus Phoranthella Townsend, 1915
- Genus Phorcida Robineau-Desvoidy, 1863 accepted as Nilea Robineau-Desvoidy, 1863
- Genus Phorcidella Mesnil, 1946
- Genus Phorichaeta Van der Wulp, 1903
- Genus Phorichaeta Brauer & Bergenstamm, 1889 accepted as Phoricheta Rondani, 1861
- Genus Phoricheta Rondani, 1861 accepted as Scopolia Robineau-Desvoidy, 1830
- Genus Phorinia Robineau-Desvoidy, 1830
- Genus Phoriniophylax Townsend, 1927
- Genus Phorocera Robineau-Desvoidy, 1830
- Genus Phorocerosoma Malloch, 1929
- Genus Phorocerosoma Townsend, 1927
- Genus Phorocerostoma Malloch, 1930
- Genus Phorophylla Robineau-Desvoidy, 1830
- Genus Phorostoma Robineau-Desvoidy, 1830 accepted as Dinera Robineau-Desvoidy, 1830
- Genus Phosocephala Townsend, 1908
- Genus Phosococephala Coquillett, 1910 accepted as Phosocephala Townsend, 1908
- Genus Phosococephalops Townsend, 1927
- Genus Phrino Rondani, 1861 accepted as Phryno Robineau-Desvoidy, 1830
- Genus Phrissopolia Townsend, 1908
- Genus Phrixe Rondani, 1862 accepted as Phryxe Robineau-Desvoidy, 1830
- Genus Phrynactia Townsend, 1926
- Genus Phryno Robineau-Desvoidy, 1830
- Genus Phrynofrontina Townsend, 1919 accepted as Lixophaga Townsend, 1908
- Genus Phrynolydella Townsend, 1919
- Genus Phrynotachina Townsend, 1927
- Genus Phryxe Robineau-Desvoidy, 1830
- Genus Phryxosturmia Townsend, 1927
- Genus Phylacteropoda Townsend, 1916
- Genus Phyllaristomyia Townsend, 1931
- Genus Phyllolabella Townsend, 1919
- Genus Phyllomya Robineau-Desvoidy, 1830
- Genus Phyllomyia Macquart, 1835 accepted as Phyllomya Robineau-Desvoidy, 1830
- Genus Phyllophila Townsend, 1915 accepted as Phyllophilopsis Townsend, 1915
- Genus Phyllophilopsis Townsend, 1915
- Genus Phyllophorocera Townsend, 1916
- Genus Phyllophryno Townsend, 1927
- Genus Phytoadmontia Townsend, 1916
- Genus Phytomyptera Rondani, 1845
- Genus Phytomypterina Emden, 1960
- Genus Phytomyzoneura Stein, 1924
- Genus Phytomyzoptera Bezzi, 1906 accepted as Phytomyptera Rondani, 1845
- Genus Phytopsis Townsend, 1915
- Genus Phytorophaga Bezzi, 1923
- Genus Picconia Robineau-Desvoidy, 1863
- Genus Pictoepalpus Townsend, 1915
- Genus Pilatea Townsend, 1916
- Genus Piligena van Emden, 1947
- Genus Piligenoides Barraclough, 1985
- Genus Pilimyia Malloch, 1930
- Genus Pimelimyia Mesnil, 1949 & 1950
- Genus Piriona Aldrich, 1928
- Genus Pirionimyia Townsend, 1931
- Genus Pirrosia Rondani, 1873 accepted as Pyrrosia Rondani, 1856
- Genus Pissemya Robineau-Desvoidy, 1851 accepted as Gonia Meigen, 1803
- Genus Pitthaea Robineau-Desvoidy, 1863 accepted as Nemorilla Rondani, 1856
- Genus Piximactia Townsend, 1927
- Genus Plagia Meigen, 1838
- Genus Plagiatormia Séguy, 1926 accepted as Plagiotormia Séguy, 1926
- Genus Plagimasicera Townsend, 1915
- Genus Plagiocoma Villeneuve, 1916
- Genus Plagioderophagus Baranov, 1938
- Genus Plagiomima Brauer & Bergenstamm, 1891
- Genus Plagiomyia Curran, 1927
- Genus Plagiophryxe Townsend, 1926
- Genus Plagiops Townsend, 1912
- Genus Plagiops Townsend, 1911 accepted as Plagiops Townsend, 1912
- Genus Plagiopsis Brauer & Bergenstamm, 1890
- Genus Plagiosippus Reinhard, 1962
- Genus Plagiotachina Townsend, 1927
- Genus Plagiotormia Séguy, 1926
- Genus Plagiprospherysa Townsend, 1892
- Genus Planomyia Aldrich, 1934
- Genus Platerycia Baranov, 1936
- Genus Platychira Rondani, 1856 accepted as Platychyra Rondani, 1859
- Genus Platychyra Rondani, 1859 accepted as Panzeria Meigen, 1838
- Genus Platydexia van Emden, 1954
- Genus Platymya Robineau-Desvoidy, 1830
- Genus Platymyia Agassiz, 1846 accepted as Platymya Robineau-Desvoidy, 1830
- Genus Platyphasia Townsend, 1935
- Genus Platyrrhinodexia Townsend, 1927
- Genus Platyschineria Villeneuve, 1942
- Genus Platytachina Malloch, 1938
- Genus Platytainia Macquart, 1851
- Genus Plaxactia Townsend, 1931
- Genus Plectops Coquillett, 1897
- Genus Plectopsis Townsend, 1927
- Genus Pleropeleteria Villeneuve, 1916
- Genus Plesina Meigen, 1838
- Genus Plesiodexilla Blanchard, 1966
- Genus Plesioestrus
- Genus Plesionevra Macquart, 1855
- Genus Plesiooestrus Villeneuve, 1914
- Genus Plethochaetigera Malloch, 1938
- Genus Pododexia Brauer & Bergenstamm, 1890
- Genus Podomyia Brauer & Bergenstamm, 1890
- Genus Podosturmia Townsend, 1928
- Genus Podotachina Brauer & Bergenstamm, 1891
- Genus Pointelia Mesnil, 1956
- Genus Polidaria Curran, 1934
- Genus Polidea Macquart, 1848
- Genus Polideosoma Townsend, 1915
- Genus Poliophrys Townsend, 1908
- Genus Poliops Aldrich, 1934
- Genus Polistiopsis Townsend, 1915
- Genus Polistomyia Townsend, 1908
- Species Polistomyia subdivisa Townsend, 1908
- Genus Politomyia Reinhard, 1935
- Genus Polybiocyptera Guimarães, 1979
- Genus Polybiophila Curran, 1937
- Genus Polychaeta Macquart, 1851
- Genus Polychaetoneura Walton, 1914
- Genus Polychnomyia Bischof, 1904
- Genus Polygaster Van der Wulp, 1890
- Genus Polygastropteryx Mesnil, 1953
- Genus Porphyromus Emden, 1960
- Genus Poujadea Mesnil, 1950 accepted as Sisyropa Brauer & Bergenstamm, 1890
- Genus Pradocania Tschorsnig, 1997
- Genus Pretoriamyia Curran, 1927
- Genus Pretoriana Curran, 1938
- Genus Proarchytoides Blanchard, 1941
- Genus Proboscina Rondani, 1856 accepted as Rhynchista Rondani, 1861
- Genus Proboscista Rondani, 1861 accepted as Fischeria Robineau-Desvoidy, 1830
- Genus Procarcelia Townsend, 1927
- Genus Procatharosia Villeneuve, 1924
- Genus Proceromyia Mesnil, 1957
- Genus Procissio
- Genus Procistogaster Townsend, 1934
- Genus Procleonice Townsend, 1935
- Genus Procyanopsis Townsend, 1934
- Genus Prodegeeria Brauer & Bergenstamm, 1894
- Genus Prodemoticus Villeneuve, 1919
- Genus Prodexilla Townsend, 1932
- Genus Prodexodes Townsend, 1927
- Genus Prodiaphania Townsend, 1927
- Genus Proepalpus Townsend, 1927
- Genus Proferia Mesnil, 1953 accepted as Proferia Mesnil, 1968
- Genus Proferia Mesnil, 1968 accepted as Thelairoleskia Townsend, 1926
- Genus Prohypotachina Townsend, 1932
- Genus Proleskia Townsend, 1927
- Genus Proleskiomima Townsend, 1934
- Genus Prolixophaga Townsend, 1934 accepted as Lixophaga Townsend, 1908
- Genus Prolophosia Townsend, 1932
- Genus Prolypha Townsend, 1934
- Genus Promasiphya Townsend, 1927
- Genus Promasipoda Townsend, 1934
- Genus Promedina Mesnil, 1957
- Genus Promegaparia Townsend, 1931
- Genus Promericia Brooks, 1943
- Genus Prometopiops Townsend, 1927
- Genus Promintho Townsend, 1926
- Genus Pronemorilla Townsend, 1935
- Genus Prooppia Townsend, 1926
- Genus Proparachaeta Townsend, 1928
- Genus Proparachaetopsis Blanchard, 1942
- Genus Proparathelaira Townsend, 1928
- Genus Prophaenopsis Townsend, 1927
- Genus Prophasiopsis Townsend, 1927
- Genus Prophorichaeta Townsend, 1928
- Genus Prophorinia Townsend, 1927
- Genus Prophorostoma Townsend, 1927
- Genus Prophryno Townsend, 1927
- Genus Prophrynopsis Townsend, 1927
- Genus Proporichaeta
- Genus Prorhynchops Brauer & Bergenstamm, 1891
- Genus Proriedelia Mesnil, 1953
- Genus Proroglutea Townsend, 1919
- Genus Prosalia Mesnil, 1946 accepted as Neophryxe Townsend, 1916
- Genus Proscissio Hutton, 1900
- Genus Proselenus Reinhard, 1964
- Genus Prosena Lepeletier & Serville, 1828
- Genus Prosenactia Blanchard, 1940
- Genus Prosenina Malloch, 1930
- Genus Prosenoides Brauer & Bergenstamm, 1891
- Genus Prosenosoma Malloch, 1938
- Genus Prosenostoma Townsend, 1932
- Genus Prosethilla Herting, 1984
- Genus Prosheliomyia Brauer & Bergenstamm, 1891
- Genus Prosopaea Brauer & Bergenstamm, 1889 accepted as Prosopea Rondani, 1861
- Genus Prosopea Rondani, 1861
- Genus Prosophia Townsend, 1927
- Genus Prosopochaeta
- Genus Prosopochoeta Macquart, 1851
- Genus Prosopodes Brauer & Bergenstamm, 1890
- Genus Prosopodopsis Townsend, 1926
- Genus Prosopofrontina Townsend, 1926
- Genus Prospalaea Aldrich, 1925
- Genus Prospanipalpus Townsend, 1931
- Genus Prospherysa Van der Wulp, 1890
- Genus Prospherysodoria Townsend, 1928
- Genus Prosteatosoma Blanchard, 1943
- Genus Prosturmia Townsend, 1927
- Genus Prosturmina Mesnil, 1949 accepted as Prosturmina Mesnil, 1970
- Genus Prosturmina Mesnil, 1970 accepted as Palexorista Townsend, 1921
- Genus Prosuccingulum Mesnil, 1959
- Genus Protaporia Townsend, 1919
- Genus Proteloglutus Cortes & Valencia, 1972 †
- Genus Protodejeania Townsend, 1915
- Genus Protogonia Townsend, 1912
- Genus Protogoniops Townsend, 1913
- Genus Protogoniopsis Townsend, 1915
- Genus Protohystricia Malloch, 1929
- Genus Protomeigenia Townsend, 1916
- Genus Protonemoraea Baranov, 1935
- Genus Protonotodytes Blanchard, 1966
- Genus Protrichoprosopis Blanchard, 1966
- Genus Protypophaemyia Blanchard, 1963
- Genus Prowinthemia Townsend, 1928
- Genus Proxanthobasis Blanchard, 1966
- Genus Proxynops Townsend, 1927
- Genus Proxystomima Villeneuve, 1925
- Genus Prozenillia Villeneuve, 1916
- Genus Przibramiella Suster, 1934
- Genus Psalida Rondani, 1856 accepted as Leucostoma Meigen, 1803
- Genus Psalidopteryx Townsend, 1916
- Genus Psalidoxena Villeneuve, 1941
- Genus Psammoppia Townsend, 1915
- Genus Psaronia Enderlein, 1936
- Genus Psecacera Bigot, 1880
- Genus Pseudalophora Portschinsky, 1881
- Genus Pseudalsomyia Mesnil, 1968
- Genus Pseudapinops Coquillett, 1902
- Genus Pseudatractocera Townsend, 1892
- Genus Pseudebenia Shima, Han & Tachi, 2010
- Genus Pseudeuantha Townsend, 1915
- Genus Pseudoarchytas Townsend, 1915
- Genus Pseudobelvosia Blanchard, 1954
- Genus Pseudobombyliomyia Townsend, 1931
- Genus Pseudobrullaea Mesnil, 1957
- Genus Pseudocelatoria Thompson, 1968
- Genus Pseudochaeta Coquillett, 1895
- Genus Pseudochaetona Townsend, 1919
- Genus Pseudoclista Brauer & Bergenstamm, 1893
- Genus Pseudocyptera Brauer & Bergenstamm, 1893
- Genus Pseudodemoticus Brauer & Bergenstamm, 1893
- Genus Pseudodexia Brauer & Bergenstamm, 1891
- Genus Pseudodexia Chao, 2002
- Genus Pseudodexilla O'Hara, Shima & Zhang, 2009
- Genus Pseudodidyma Townsend, 1915
- Genus Pseudodinera Brauer & Bergenstamm, 1891
- Genus Pseudoepalpodes Vimmer & Soukup, 1940
- Genus Pseudoeribea Townsend, 1926
- Genus Pseudogermaria Brauer & Bergenstamm, 1891
- Genus Pseudogonia Brauer & Bergenstamm, 1890
- Genus Pseudohystricia Brauer & Bergenstamm, 1890
- Genus Pseudokea Townsend, 1928
- Genus Pseudolecanipus Vimmer, 1934
- Genus Pseudolomacantha Hendel, 1901
- Genus Pseudolomyia Reinhard, 1962
- Genus Pseudomasiphya Thompson, 1963
- Genus Pseudomeriania Brooks, 1943
- Genus Pseudomintho Brauer & Bergenstamm, 1889
- Genus Pseudominthodes Townsend, 1932
- Genus Pseudomorinia Van der Wulp, 1891
- Genus Pseudomyothyria Townsend, 1892
- Genus Pseudoneoptera Séguy, 1926
- Genus Pseudoophirion Vimmer & Soukup, 1940
- Genus Pseudopachystylum Mik, 1891
- Genus Pseudoperichaeta Brauer & Bergenstamm, 1890
- Genus Pseudopeteina Malloch, 1938
- Genus Pseudopetina Ringdahl, 1933
- Genus Pseudophorocera Brauer & Bergenstamm, 1890
- Genus Pseudoprospherysa Thompson, 1968
- Genus Pseudorectocera Townsend, 1928
- Genus Pseudoredtenbacheria Brauer & Bergenstamm, 1890
- Genus Pseudorrhinactia Thompson, 1968
- Genus Pseudosiphona Townsend, 1916
- Genus Pseudosiphosturmia Thompson, 1966
- Genus Pseudosturmia Thompson, 1966
- Genus Pseudotachinomyia Smith, 1917
- Genus Pseudotractocera Curran, 1934 accepted as Pseudatractocera Townsend, 1892
- Genus Pseudotrichopoda Malloch, 1933
- Genus Pseudoviviania Brauer & Bergenstamm, 1891
- Genus Pseudoxanthozona Townsend, 1931
- Genus Pseudoxanthozonella Townsend, 1931
- Genus Psilopleura Reinhard, 1943 accepted as Bahrettinia Özdikmen, 2007
- Genus Pterinopterna Townsend, 1919
- Genus Pterotopeza Townsend, 1908
- Genus Ptesiomyia Brauer & Bergenstamm, 1893
- Genus Ptilocatagonia Mesnil, 1956
- Genus Ptilocera Robineau-Desvoidy, 1830 accepted as Zeuxia Meigen, 1826
- Genus Ptilocerina Macquart, 1835 accepted as Zeuxia Meigen, 1826
- Genus Ptilocheta Rondani, 1857 accepted as Ptilocera Robineau-Desvoidy, 1830
- Genus Ptilochoeta Bezzi, 1894 accepted as Ptilocheta Rondani, 1857
- Genus Ptilodegeeria Brauer & Bergenstamm, 1891
- Genus Ptilodexia Brauer & Bergenstamm, 1890
- Genus Ptilogonia Bischof, 1904
- Genus Ptilolydella Townsend, 1927
- Genus Ptilomya
- Genus Ptilomyiopsis Townsend, 1933
- Genus Ptilomyoides Curran in Curran, 1928
- Genus Ptilops Rondani, 1857 accepted as Dufouria Robineau-Desvoidy, 1830
- Genus Ptilopsina Villeneuve, 1920
- Genus Ptilopsis Robineau-Desvoidy, 1863
- Genus Ptilozeuxia Brauer & Bergenstamm, 1890
- Genus Ptychomyia Brauer & Bergenstamm, 1890
- Genus Ptylocera Rondani, 1861 accepted as Ptilocera Robineau-Desvoidy, 1830
- Genus Ptylops Rondani, 1859 accepted as Macquartia Robineau-Desvoidy, 1830
- Genus Pujolina Mesnil, 1968
- Genus Punaclista Townsend, 1915
- Genus Punamyia Townsend, 1915
- Genus Punamyocera Townsend, 1919
- Genus Pygidia Malloch, 1930
- Genus Pygidimyia Crosskey, 1967 † accepted as Pygidia Malloch, 1930
- Genus Pygocalcager Townsend, 1935
- Genus Pygophorinia Townsend, 1927
- Genus Pyragrura Rondani, 1861 accepted as Labigastera Macquart, 1834
- Genus Pyraustomyia Townsend, 1916
- Genus Pyrosia Schiner, 1868 accepted as Pyrrosia Rondani, 1856
- Genus Pyrrhodexia Townsend, 1931
- Genus Pyrrhoernestia Townsend, 1931
- Genus Pyrrhosia Brauer & Bergenstamm, 1889 accepted as Pyrrosia Rondani, 1856
- Genus Pyrrhosia Van der Wulp, 1891 accepted as Pyrrosia Rondani, 1856
- Genus Pyrrhosiella Villeneuve, 1916
- Genus Pyrrhotachina Townsend, 1931
- Genus Pyrrosia Rondani, 1856 accepted as Leskia Robineau-Desvoidy, 1830
- Genus Quadra Malloch, 1929
- Genus Quadratosoma Townsend, 1914
- Genus Racodineura Rondani, 1861 accepted as Roeselia Robineau-Desvoidy, 1830
- Genus Ramburia Robineau-Desvoidy, 1851 accepted as Triarthria Stephens, 1829
- Genus Ramona Kugler, 1980
- Genus Ramonda Robineau-Desvoidy, 1863 accepted as Periscepsia Gistl, 1848
- Genus Ramonella Kugler, 1981
- Genus Ramphina Rondani, 1856 accepted as Rhamphina Macquart, 1835
- Genus Rasiliverpa Barraclough, 1992
- Genus Rcortesia Koçak & Kemal, 2010
- Genus Reaumuria Robineau-Desvoidy, 1830 accepted as Gonia Meigen, 1803
- Genus Redia Bezzi & Stein, 1907 accepted as Rhedia Robineau-Desvoidy, 1830
- Genus Redtenbacheria Schiner, 1861
- Genus Reedia Aldrich, 1928
- Genus Reichardia Karsch, 1886
- Genus Reinhardiana Arnaud, 1952 accepted as Microchaetina Van der Wulp, 1891
- Genus Reinigia Enderlein, 1933
- Genus Rhachoepalpodes Townsend, 1935
- Genus Rhachoepalpus Townsend, 1908
- Genus Rhachoëpalpus Townsend, 1908 accepted as Rhachoepalpus Townsend, 1908
- Genus Rhachogaster Townsend, 1915
- Genus Rhachosaundersia Townsend, 1931
- Genus Rhacodinella Mesnil in Mesnil & Pschorn-Walcher, 1968
- Genus Rhacodineura accepted as Racodineura Rondani, 1861
- Genus Rhamphina Macquart, 1835
- Genus Rhamphinina Bigot, 1885
- Genus Rhamphopteryx Townsend, 1931 accepted as Mehmetia Özdikmen, 2007
- Genus Rhaphiochaeta Brauer & Bergenstamm, 1890
- Genus Rhaphis Van der Wulp, 1885
- Genus Rhedia Robineau-Desvoidy, 1830 accepted as Gonia Meigen, 1803
- Genus Rhinaplomyia Mesnil, 1955
- Genus Rhinomacquartia Brauer & Bergenstamm, 1891
- Genus Rhinometopia Brauer & Bergenstamm, 1893
- Genus Rhinomya Robineau-Desvoidy, 1830
- Genus Rhinomydes Townsend, 1932 accepted as Rhinomyodes Townsend, 1932
- Genus Rhinomyia Macquart, 1835
- Genus Rhinomyia Agassiz, 1846 accepted as Rhinomya Robineau-Desvoidy, 1830
- Genus Rhinomyiobia Bezzi, 1928 accepted as Rhinomyobia Brauer & Bergenstamm, 1893
- Genus Rhinomyobia Brauer & Bergenstamm, 1893
- Genus Rhinomyodes Townsend, 1932
- Genus Rhinophoroides Barraclough, 2005
- Genus Rhinotachina Brauer & Bergenstamm, 1890
- Genus Rhodesina Curran, 1939
- Genus Rhodogyne Meigen, 1800
- Genus Rhombothyria Van der Wulp, 1891
- Genus Rhombothyriops Townsend, 1915
- Genus Rhychiodexia Bigot, 1889 accepted as Rhynchionodexia Bigot, 1885
- Genus Rhycodexia Malloch, 1930 accepted as Rhynchionodexia Bigot, 1885
- Genus Rhynchiodexia Bigot, 1885 accepted as Rhynchionodexia Bigot, 1885
- Genus Rhynchionodexia Bigot, 1885 accepted as Senostoma Macquart, 1847
- Genus Rhynchista Rondani, 1861 accepted as Eriothrix Meigen, 1803
- Genus Rhynchodexia Van der Wulp, 1891 accepted as Rhynchionodexia Bigot, 1885
- Genus Rhynchodinera Brauer & Bergenstamm, 1890
- Genus Rhynchogonia Brauer & Bergenstamm, 1893
- Genus Rhynchopeteina Townsend, 1931
- Genus Rhynchosia Macquart, 1848 accepted as Aphria Robineau-Desvoidy, 1830
- Genus Rhyncosia Rondani, 1861 accepted as Rhynchosia Macquart, 1848
- Genus Rhynomyia Macquart, 1833
- Genus Richteriola Mesnil, 1963
- Genus Ricosia Curran, 1927
- Genus Riedelia Mesnil, 1942
- Genus Rileya Brauer & Bergenstamm, 1893 accepted as Rileymyia Townsend, 1893
- Genus Rileya Ashmead, 1888 accepted as Rileya Brauer & Bergenstamm, 1893
- Genus Rileyella Townsend, 1909
- Genus Rileymyia Townsend, 1893
- Genus Rioteria Herting, 1973
- Genus Robinaldia Herting, 1983
- Genus Roeselia Robineau-Desvoidy, 1830 accepted as Ocytata Gistl, 1848
- Genus Roeseliopsis Townsend, 1915
- Genus Rohdendorfiola Zimin, 1935
- Genus Rondania Robineau-Desvoidy, 1850
- Genus Rondaniooestrus Villeneuve, 1916
- Genus Rossimyiops Mesnil, 1953
- Genus Roubaudia Villeneuve, 1910
- Genus Ruiziella Cortés, 1951
- Genus Rutilia Robineau-Desvoidy, 1830
- Genus Rutilodexia Townsend, 1915
- Genus Rutilotrixa Townsend, 1932
- Genus Ruya Paramonov, 1968
- Genus Sagaris Robineau-Desvoidy, 1863
- Genus Salia Robineau-Desvoidy, 1830 accepted as Chetogena Rondani, 1856
- Genus Salmacia Meigen, 1800
- Genus Santacruzia Thompson, 1968
- Genus Santacruziopsis Thompson, 1968
- Genus Saralba Walker, 1865
- Genus Sarcocalirrhoe Townsend, 1928
- Genus Sarcolydella Townsend, 1927
- Genus Sarcoprosena Townsend, 1927
- Genus Sardiocera Brauer & Bergenstamm, 1890
- Genus Sarrhorina
- Genus Sarromyia Pokorny, 1893
- Genus Sarrorhina Villeneuve, 1936
- Genus Saskatchewania Smith, 1915
- Genus Saundersia Schiner, 1868
- Genus Saundersiopmima Townsend, 1927
- Genus Saundersiops Townsend, 1914
- Genus Scaphimyia Mesnil, 1953
- Genus Schaumia Robineau-Desvoidy, 1863 accepted as Blondelia Robineau-Desvoidy, 1830
- Genus Schembria Rondani, 1861
- Genus Schineria Rondani, 1857
- Genus Schistochilus Aldrich, 1932
- Genus Schistostephana Townsend, 1919
- Genus Schizactia Townsend, 1926
- Genus Schizocerophaga Townsend, 1916
- Genus Schizolinnaea Emden, 1960
- Genus Schizotachina Walker, 1852
- Genus Schlingermyia Cortes, 1967
- Genus Schwarzalia Curran, 1934
- Genus Sciasma Coquillett, 1897
- Genus Scologaster Aldrich, 1926
- Genus Scomma Rikhter, 1972
- Genus Scopolia Robineau-Desvoidy, 1830 accepted as Periscepsia Gistl, 1848
- Genus Scotia Robineau-Desvoidy, 1863 accepted as Neoscotia Townsend, 1919
- Genus Scotiella Mesnil, 1940
- Genus Scotioptera Blanchard, 1840 accepted as Scotiptera Macquart, 1835
- Genus Scotiptera Macquart, 1835
- Genus Scotoptera Agassiz, 1846 accepted as Scotiptera Macquart, 1835
- Genus Selenomyia Brauer & Bergenstamm, 1891
- Genus Semiomya Rondani, 1859 accepted as Semiomyia Bremi in Macquart, 1848
- Genus Semiomyia Bremi in Macquart, 1848 accepted as Trixa Meigen, 1824
- Genus Semisuturia Malloch, 1927
- Genus Senexorista Townsend, 1927
- Genus Senometopia Macquart, 1834
- Genus Senostoma Macquart, 1847
- Genus Sepseocara Richter, 1986
- Genus Sericocera Macquart, 1834
- Genus Sericodoria Townsend, 1928
- Genus Sericophoromyia Austen, 1909
- Genus Sericotachina Townsend, 1916
- Genus Sericozenillia Mesnil, 1957
- Genus Servillia Robineau-Desvoidy, 1830 accepted as Tachina Meigen, 1803
- Genus Servillina Malloch, 1932
- Genus Servilliodes Townsend, 1926
- Genus Servilliopsis Townsend, 1916
- Genus Serycocera Robineau-Desvoidy, 1863 accepted as Sericocera Macquart, 1834
- Genus Sesiophaga Brauer & Bergenstamm, 1891
- Genus Setalunula Chao & Yang, 1990
- Genus Setigonia Brooks, 1943
- Genus Setolestes Aldrich, 1934
- Genus Seyrigomyia Mesnil, 1944
- Genus Shannonomyiella Townsend, 1939
- Genus Shermanalia Curran, 1934
- Genus Shimamyia Huang & Tachi, 2024
- Genus Sigelotroxis Aldrich, 1928
- Genus Signoepalpus Townsend, 1931
- Genus Signosoma Townsend, 1914
- Genus Signosomopsis Townsend, 1914
- Genus Silbermania Robineau-Desvoidy, 1863 accepted as Dufouria Robineau-Desvoidy, 1830
- Genus Silbermannia
- Genus Simoma Aldrich, 1926
- Genus Siphoactia Townsend, 1927
- Genus Siphoclytia Townsend, 1892
- Genus Siphocrocuta Townsend, 1935
- Genus Sipholeskia Townsend, 1916
- Genus Siphona Meigen, 1803
- Genus Siphonia Zetterstedt, 1837 accepted as Siphona Meigen, 1803
- Genus Siphoniomyia Bigot, 1885 accepted as Siphonionomyia Bigot, 1885
- Genus Siphonionomyia Bigot, 1885 accepted as Trichophora Macquart, 1847
- Genus Siphonopsis Townsend, 1916
- Genus Siphopallasia Brooks, 1946
- Genus Siphophyto Townsend, 1892
- Genus Siphoplagia Townsend, 1891
- Genus Siphoplagiopsis
- Genus Siphopsalida Townsend, 1915
- Genus Siphosturmia Coquillett, 1897
- Genus Siphosturmiopsis
- Genus Siphyphyto
- Genus Sironia Robineau-Desvoidy, 1863
- Genus Sirostoma Rondani, 1862 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Sisyphomyia Townsend, 1927
- Genus Sisyrohoughia Townsend, 1927
- Genus Sisyropa Brauer & Bergenstamm, 1890
- Genus Sisyropodexia
- Genus Sisyropododexia Townsend, 1927
- Genus Sisyrosturmia Townsend, 1926
- Genus Sitellitergus Reinhard, 1964
- Genus Sitophaga Gistl, 1848 accepted as Fabricia Robineau-Desvoidy, 1830
- Genus Slossonaemyia Townsend, 1916
- Genus Smidtia Robineau-Desvoidy, 1830
- Genus Smidtiola Mesnil, 1957
- Genus Soleria Robineau-Desvoidy, 1849 accepted as Solieria Robineau-Desvoidy, 1849
- Genus Solieria Robineau-Desvoidy, 1849
- Genus Solieriopsis Reinhard, 1967
- Genus Solomonilla Özdikmen, 2007
- Genus Somatolai Bezzi & Stein, 1907 accepted as Somoleja Rondani, 1865
- Genus Somoleja Rondani, 1865 accepted as Lydina Robineau-Desvoidy, 1830
- Genus Somoleya Rondani, 1868 accepted as Somoleja Rondani, 1865
- Genus Sonaca Rikhter, 1981
- Genus Sophia Robineau-Desvoidy, 1830
- Genus Sophiella Guimarães, 1982
- Genus Sorochemyia Townsend, 1915
- Genus Spaanzania Schiner, 1868 accepted as Spallanzania Robineau-Desvoidy, 1830
- Genus Spallanzania Robineau-Desvoidy, 1830
- Genus Spanipalpis Coquillett, 1910 accepted as Spanipalpus Townsend, 1908
- Genus Spanipalpus Townsend, 1908
- Genus Spathidexia Townsend, 1912
- Genus Spathimeigenia Townsend, 1915
- Genus Spathimyia Townsend, 1912
- Genus Spathipalpus Rondani, 1863
- Genus Spatipalpus Brauer & Bergenstamm, 1891 accepted as Spathipalpus Rondani, 1863
- Genus Sphaerina Van der Wulp, 1890
- Genus Sphalloglandulus Townsend, 1915
- Genus Sphylosia Schiner, 1861 accepted as Spylosia Rondani, 1856
- Genus Sphyrimyia Bigot, 1883 accepted as Peleteria Robineau-Desvoidy, 1830
- Genus Sphyriomyia Mik, 1883 accepted as Sphyrimyia Bigot, 1883
- Genus Sphyromyia Bigot, 1884 accepted as Sphyrimyia Bigot, 1883
- Genus Spilochaetosoma Smith, 1918
- Genus Spilosia Rondani, 1856 accepted as Spylosia Rondani, 1856
- Genus Spiniabdomina Shi, 1991
- Genus Spinolia Robineau-Desvoidy, 1863 accepted as Blondelia Robineau-Desvoidy, 1830
- Genus Spinuphalla Lehrer, 2013 accepted as Drino Robineau-Desvoidy, 1863
- Genus Spiroglossa Doleschall, 1858
- Genus Spixomyia Crosskey, 1967
- Genus Spoggosia Rondani, 1859 accepted as Chetogena Rondani, 1856
- Genus Spylosia Rondani, 1856 accepted as Meigenia Robineau-Desvoidy, 1830
- Genus Squamomedina Townsend, 1934
- Genus Stackelbergomyia Rodendorf, 1948
- Genus Stackelbergula Richter, 1967
- Genus Staegeria Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Stauferia Brauer & Bergenstamm, 1890
- Genus Staurochaeta Brauer & Bergenstamm, 1890
- Genus Steatosoma Aldrich, 1934
- Genus Steiniomyia Townsend, 1932
- Genus Steleoneura Stein, 1924
- Genus Steloneura
- Genus Stenaulacodoria Townsend, 1928
- Genus Stenochaeta Thompson, 1968
- Genus Stenodexia Van der Wulp, 1891
- Genus Stenodexiopsis Townsend, 1926
- Genus Stenometopia Agassiz, 1846
- Genus Stenoneura Reinhard, 1945
- Genus Stenoparia Stein, 1924
- Genus Stenostoma Macquart, 1850 accepted as Senostoma Macquart, 1847
- Genus Stenosturmia Townsend, 1927
- Genus Stephania Robineau-Desvoidy, 1863 accepted as Triarthria Stephens, 1829
- Genus Stephenia Robineau-Desvoidy, 1863 accepted as Stephensia Robineau-Desvoidy, 1863
- Genus Stephensia Robineau-Desvoidy, 1863 accepted as Microsoma Macquart, 1855
- Genus Steveniopsis Townsend, 1919
- Genus Sthenopleura Aldrich, 1926
- Genus Stictodexia Villeneuve, 1912
- Genus Stolatosoma Reinhard, 1953
- Genus Stomatodexia Brauer & Bergenstamm, 1890
- Genus Stomatolydella Townsend, 1919
- Genus Stomatomya
- Genus Stomatomyia Brauer & Bergenstamm, 1890
- Genus Stomatotachina Townsend, 1931
- Genus Stomina Robineau-Desvoidy, 1830
- Genus Strobliomyia Townsend, 1926
- Genus Strongigaster Rondani, 1868 accepted as Strongygaster Macquart, 1834
- Genus Strongygaster Macquart, 1834
- Genus Strongylogaster Blanchard, 1840 accepted as Strongygaster Macquart, 1834
- Genus Stuardomyia Cortés, 1945
- Genus Sturmia Robineau-Desvoidy, 1830
- Genus Sturmiellina Thompson, 1963
- Genus Sturmimasiphya Townsend, 1935
- Genus Sturmioactia Townsend, 1927
- Genus Sturmiodexia Townsend, 1919
- Genus Sturmiodoria Townsend, 1928
- Genus Sturmiomima Townsend, 1934
- Genus Sturmiopsis Townsend, 1916
- Genus Sturmiopsoidea Thompson, 1966
- Genus Stylocarcelia Zeegers, 2007
- Genus Stylogymnomyia Brauer & Bergenstamm, 1891
- Genus Stylogynemyia Townsend, 1927
- Genus Stylomyia Van der Wulp, 1869
- Genus Stylurodoria Townsend, 1932
- Genus Subfischeria Villeneuve, 1937
- Genus Succingulodes Townsend, 1935
- Genus Succingulum Pandellé, 1894
- Genus Suensonomyia Mesnil, 1953
- Genus Sumatrodexia Townsend, 1926
- Genus Sumatrodoria Townsend, 1927
- Genus Sumatrosturmia Townsend, 1927
- Genus Sumatrotachina Townsend, 1927
- Genus Sumichrastia Townsend, 1916
- Genus Sumpigaster Macquart, 1855
- Genus Susamyia Ziegler & Gilasian, 2021
- Genus Symmorphomyia Mesnil & Shima, 1977
- Genus Synactia Villeneuve, 1915
- Genus Synamphichaeta Villeneuve, 1936
- Genus Synaplomyia Villeneuve, 1934
- Genus Syneplaca Villeneuve, 1938
- Genus Synhypostena Villeneuve, 1939
- Genus Synorbitalia Thompson, 1968
- Genus Synoris Aldrich, 1926
- Genus Synthomocera Rondani, 1865 accepted as Syntomocera Schiner, 1861
- Genus Syntomocera Schiner, 1861
- Genus Syntomogaster Egger, 1860
- Genus Syphona Robineau-Desvoidy, 1830 accepted as Siphona Meigen, 1803
- Genus Syringosoma Townsend, 1917
- Genus Tachina Meigen, 1803
- Genus Tachinaestrus Portschinsky, 1887 accepted as Tachinoestrus Portschinsky, 1887
- Genus Tachinalia Curran, 1934
- Genus Tachinella Portschinsky, 1881
- Genus Tachineo Malloch, 1938
- Genus Tachinoestrus Portschinsky, 1887
- Genus Tachinomima Brauer & Bergenstamm, 1891
- Genus Tachinomyia Townsend, 1892
- Genus Tachinophasia Townsend, 1931
- Genus Tachinophyto Townsend, 1892
- Genus Tachinophytopsis Townsend, 1927
- Genus Tachinopsis Coquillett, 1897 accepted as Chetogena Rondani, 1856
- Genus Tachinoptera Brauer & Bergenstamm, 1891
- Genus Tachinosalia Villeneuve, 1922
- Genus Tachinosoma Townsend, 1927
- Genus Tachinosomopsis Blanchard, 1941
- Genus Tachiroestrus Carus, 1888 accepted as Tachinoestrus Portschinsky, 1887
- Genus Tachna Walker, 1849 accepted as Tachina Meigen, 1803
- Genus Takanoella Baranov, 1935
- Genus Takanomyia Mesnil, 1957
- Genus Talacocera Van der Wulp, 1895
- Genus Talacrocera Brauer & Bergenstamm, 1891
- Genus Talarocera Williston, 1887
- Genus Talparomyia Thompson, 1968
- Genus Tamanukia Baranov, 1935
- Genus Tamaromyia Mesnil in Lindner, 1949 accepted as Calozenillia Townsend, 1927
- Genus Tamiclea Macquart, 1836
- Genus Tapajohoughia Townsend, 1934
- Genus Tapajoleskia Townsend, 1934
- Genus Tapajomintho Townsend, 1934
- Genus Tapajosia Townsend, 1934
- Genus Taperamyia Townsend, 1935
- Genus Tapinomyia Brauer & Bergenstamm, 1890
- Genus Tarassophorus Reinhard, 1964
- Genus Tarassus Aldrich, 1933
- Genus Tarpessita Reinhard, 1967
- Genus Tasmaniomyia Townsend, 1916
- Genus Tayloria Malloch, 1930
- Genus Technamyia Reinhard, 1975
- Genus Telaira Rondani, 1862 accepted as Thelaira Robineau-Desvoidy, 1830
- Genus Telemus Reinhard, 1967
- Genus Telodytes Aldrich, 1934
- Genus Telonotomyia
- Genus Telothyria Wulp, 1890
- Genus Telothyriosoma Townsend, 1919
- Genus Temesia Robineau-Desvoidy, 1863
- Genus Tenuirostra Ringdahl, 1933
- Genus Teretrophora Macquart, 1851
- Genus Tesseracephalus Reinhard, 1955
- Genus Tetragrapha Brauer & Bergenstamm, 1892
- Genus Tetrapteromyia Malloch, 1930
- Genus Tetrigimyia Shima & Takahashi, 2011
- Genus Tettigoniophaga Guimarães, 1978
- Genus Thalpia Robineau-Desvoidy, 1863 accepted as Bessa Robineau-Desvoidy, 1863
- Genus Thapsia Robineau-Desvoidy, 1863 accepted as Neaera Robineau-Desvoidy, 1830
- Genus Theano Robineau-Desvoidy, 1863
- Genus Thecocarcelia Townsend, 1932
- Genus Thelaira Robineau-Desvoidy, 1830
- Genus Thelairalia Curran, 1934
- Genus Thelairaporia Guimarães, 1980
- Genus Thelairia Coquillett, 1910 accepted as Thelaira Robineau-Desvoidy, 1830
- Genus Thelairochaetoma Townsend, 1919 accepted as Thelairochaetona Townsend, 1919
- Genus Thelairochaetona Townsend, 1919
- Genus Thelairodes Wulp, 1891
- Genus Thelairodoria Townsend, 1927
- Genus Thelairodoriopsis Thompson, 1968
- Genus Thelairodrino Mesnil, 1954 †
- Genus Thelairoleskia Townsend, 1926
- Genus Thelairomima Townsend, 1935
- Genus Thelairophasia Townsend, 1919
- Genus Thelairosoma Villeneuve, 1916
- Genus Thelycarcelia Townsend, 1932
- Genus Thelyconychia Brauer & Bergenstamm, 1889
- Genus Thelymorpha Brauer & Bergenstamm, 1889
- Genus Thelymyia Brauer & Bergenstamm, 1891
- Genus Thelymyiops Mesnil, 1950
- Genus Thelyoxynops Townsend, 1927
- Genus Thelyphaenopsis Townsend, 1927
- Genus Thematheca Reinhard, 1961
- Genus Theresia Robineau-Desvoidy, 1830 accepted as Billaea Robineau-Desvoidy, 1830
- Genus Theresiopsis Townsend, 1916
- Genus Therobia Brauer, 1862
- Genus Thilaira Walker, 1849 accepted as Thelaira Robineau-Desvoidy, 1830
- Genus Thompsonomyia Brooks, 1944
- Genus Thrichogena Rondani, 1859 accepted as Thrychogena Rondani, 1856
- Genus Thricholyga Rondani, 1859 accepted as Tricoliga Rondani, 1856
- Genus Thricogena Rondani, 1859 accepted as Thrychogena Rondani, 1856
- Genus Thricolyga Rondani, 1856 accepted as Tricoliga Rondani, 1856
- Genus Thriptocera Rondani, 1859 accepted as Thryptocera Macquart, 1834
- Genus Thrixa Pandellé, 1894 accepted as Trixa Meigen, 1824
- Genus Thrixion Brauer & Bergenstamm, 1890
- Genus Thrychogena Rondani, 1856 accepted as Loewia Egger, 1856
- Genus Thrycoliga Lioy, 1864 accepted as Thrycolyga Rondani, 1856
- Genus Thrycolyga Rondani, 1856 accepted as Tricoliga Rondani, 1856
- Genus Thryphera Schiner, 1861 accepted as Tryphera Meigen, 1838
- Genus Thryptocera Macquart, 1834
- Genus Thryptodexia Malloch, 1926
- Genus Thyella Robineau-Desvoidy, 1863 accepted as Nemorilla Rondani, 1856
- Genus Thyellina Mesnil, 1949
- Genus Thysanomyia Brauer & Bergenstamm, 1892
- Genus Thysanopsis Townsend, 1917
- Genus Thysanosturmia Townsend, 1927
- Genus Timavia Robineau-Desvoidy, 1863 accepted as Smidtia Robineau-Desvoidy, 1830
- Genus Tinalydella Townsend, 1927
- Genus Tinanemorilla Townsend, 1927
- Genus Tipulidomima Townsend, 1932
- Genus Tipuloleskia Townsend, 1931
- Genus Tlephusa Robineau-Desvoidy, 1863
- Genus Tongamyia Mesnil, 1953
- Genus Topomeigenia Townsend, 1919
- Genus Torinamyia
- Genus Torocca Walker, 1859
- Genus Torosomyia Reinhard, 1935
- Genus Tortriciophaga Townsend, 1916
- Genus Torynotachina Townsend, 1915
- Genus Tothillia Crosskey, 1976
- Genus Townsendiellomyia Baranoff, 1932
- Genus Townsendina Curran, 1934
- Genus Toxocnemis Macquart, 1855
- Genus Trafoia Brauer & Bergenstamm, 1894
- Genus Tragiicola Brèthes, 1918 accepted as Rileya Brauer & Bergenstamm, 1893
- Genus Traulotes Gistl, 1848 accepted as Harrisia Robineau-Desvoidy, 1830
- Genus Trepophryx
- Genus Trhyptocera Rondani, 1859 accepted as Thryptocera Macquart, 1834
- Genus Triachora Townsend, 1908
- Genus Triarthra Gistl, 1848 accepted as Triarthria Stephens, 1829
- Genus Triarthria Stephens, 1829
- Genus Tricarcelia Baranov, 1934
- Genus Trichactia Stein, 1924
- Genus Trichaeta Becker, 1908
- Genus Trichinochaeta Townsend, 1917
- Genus Trichiopoda Latreille in Cuvier, 1829 accepted as Trichopoda Latreille, 1825
- Genus Trichoceronia Cortés, 1945
- Genus Trichoclytia Townsend, 1916
- Genus Trichodejeania Townsend, 1913
- Genus Trichodischia Bigot, 1885
- Genus Trichodura Macquart, 1843
- Genus Trichoduropsis Townsend, 1919
- Genus Trichoepalpus Townsend, 1914
- Genus Trichoformosomyia Baranov, 1934
- Genus Trichogena Bezzi & Stein, 1907 accepted as Tricogena Rondani, 1856
- Genus Tricholiga Rondani, 1873 accepted as Tricoliga Rondani, 1856
- Genus Tricholyga Rondani, 1865 accepted as Tricoliga Rondani, 1856
- Genus Trichonevra Lioy, 1864
- Genus Trichopareia Brauer & Bergenstamm, 1890
- Genus Trichoparia Bezzi & Stein in Becker, 1907 accepted as Trichopareia Brauer & Bergenstamm, 1890
- Genus Trichophasia Townsend, 1939
- Genus Trichophora Macquart, 1847
- Genus Trichophoropsis Townsend, 1914
- Genus Trichopoda Latreille, 1825
- Genus Trichopododes Townsend, 1893
- Genus Trichopodopsis Townsend, 1913
- Genus Trichoprosopus Macquart, 1843
- Genus Trichopyrrhosia Townsend, 1927
- Genus Trichoraea Cortes, 1975 accepted as Trichodischia Bigot, 1885
- Genus Trichosaundersia Townsend, 1914
- Genus Trichostylum Macqüart, 1851
- Genus Trichotopteryx Townsend, 1919
- Genus Trichschizotachina Townsend, 1935
- Genus Tricogena Rondani, 1859 accepted as Thricogena Rondani, 1859
- Genus Tricoliga Rondani, 1856 accepted as Exorista Meigen, 1803
- Genus Tricolyga Rondani, 1856
- Genus Trigonospila Pokorny, 1886
- Genus Trinitodexia Townsend, 1935
- Genus Trinitodoria Townsend, 1935
- Genus Triodontopyga Townsend, 1927
- Genus Triphera Rondani, 1861 accepted as Tryphera Meigen, 1838
- Genus Triptocera Rondani, 1861 accepted as Thryptocera Macquart, 1834
- Genus Trischidocera Villeneuve, 1915
- Genus Trisisyropa Townsend, 1916
- Genus Trismegistomya Reinhard, 1967 accepted as Trismegistus Reinhard, 1967
- Genus Trismegistus Reinhard, 1967
- Genus Tritaxys Macquart, 1847
- Genus Tritochaeta Brauer & Bergenstamm, 1889
- Genus Trixa Meigen, 1824
- Genus Trixella Mesnil, 1980 accepted as Trixa Meigen, 1824
- Genus Trixiceps Villeneuve, 1936
- Genus Trixoclea Villeneuve, 1916
- Genus Trixodes Coquillett, 1902
- Genus Trixodopsis Townsend, 1933
- Genus Trixomorpha Brauer & Bergenstamm, 1890
- Genus Trochilochaeta Townsend, 1940
- Genus Trochilodes Coquillett, 1903
- Genus Trochiloglossa Townsend, 1919
- Genus Trochiloleskia Townsend, 1917
- Genus Tromodesiana Townsend, 1931
- Genus Trophomyia Aldrich, 1929
- Genus Trophops Aldrich, 1932
- Genus Tropidodexia Townsend, 1915
- Genus Tropidopsiomorpha Townsend, 1927
- Genus Tropidopsis Brauer & Bergenstamm, 1890
- Genus Truphia Malloch, 1930
- Genus Tryphera Meigen, 1838
- Genus Trypherina Malloch, 1938
- Genus Trypheromyia Reinhard, 1945
- Genus Trypherosoma Verbeke, 1962
- Genus Tryptocera Macquart, 1850 accepted as Thryptocera Macquart, 1834
- Genus Tsugaea Hall, 1939
- Genus Tunapunia Thompson, 1963
- Genus Turanogonia Rohdendorf, 1924
- Genus Tylodexia Townsend, 1926
- Genus Tyreomma Wulp, 1896
- Genus Tyreomma Brauer & Bergenstamm, 1891 accepted as Tyreomma Wulp, 1896
- Genus Ucayalimyia Townsend, 1927
- Genus Uclesia Girschner, 1901
- Genus Uclesiella Malloch, 1938
- Genus Uclesiopsis Townsend, 1931
- Genus Ugimeigenia Townsend, 1916
- Genus Ugimyia Rondani, 1870 accepted as Blepharipa Rondani, 1856
- Genus Upodemocera Townsend, 1915
- Genus Uramya Robineau-Desvoidy, 1830
- Genus Uramyia Macquart, 1843 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Uramyia Agassiz, 1846 accepted as Uramya Robineau-Desvoidy, 1830
- Genus Uraporia Townsend, 1918
- Genus Urochaetona Townsend, 1919
- Genus Urodexia Osten-Sacken, 1882
- Genus Urodexiomima Townsend, 1927
- Genus Urodexodes Townsend, 1919
- Genus Uroeuantha Townsend, 1927
- Genus Urohypomyia Townsend, 1939
- Genus Uromacquartia Townsend, 1916
- Genus Uromedina Townsend, 1926
- Genus Uromya Rondani, 1856 accepted as Uromyia Meigen, 1838
- Genus Uromyia Meigen, 1838
- Genus Urophillophila Curran, 1934 accepted as Urophyllophila Townsend, 1927
- Genus Urophylla Brauer & Bergenstamm, 1890
- Genus Urophyllina
- Genus Urophylloides Brauer & Bergenstamm, 1892
- Genus Urophyllophila Townsend, 1927
- Genus Urophyllopsis Townsend, 1916 accepted as Lixophaga Townsend, 1908
- Genus Ursophyto Aldrich, 1926
- Genus Uruactia Townsend, 1927
- Genus Urucurymyia Townsend, 1934
- Genus Uruhuasia Townsend, 1914
- Genus Uruhuasiopsis Townsend, 1915
- Genus Uruleskia Townsend, 1934
- Genus Urumyobia Townsend, 1934
- Genus Ushpayacua Townsend, 1928
- Genus Vafrellia Robineau-Desvoidy, 1850
- Genus Valpogonia Townsend, 1928
- Genus Vanderwulpella Townsend, 1919
- Genus Vanderwulpia Townsend, 1891
- Genus Vanzemia Robineau-Desvoidy, 1863 accepted as Erynnia Robineau-Desvoidy, 1830
- Genus Varichaeta Speiser, 1903
- Genus Velardemyia Valencia, 1972
- Genus Velocia Robineau-Desvoidy, 1863 accepted as Medina Robineau-Desvoidy, 1830
- Genus Veluta Malloch, 1938
- Genus Ventoplagia Richter, 2009
- Genus Verbekeia Mesnil, 1959
- Genus Verreauxia Robineau-Desvoidy, 1863 accepted as Blepharipa Rondani, 1856
- Genus Verrugomyia Townsend, 1927
- Genus Verrugophryno Townsend, 1927
- Genus Vertepalpus Curran, 1947
- Genus Vespivora Malloch, 1930
- Genus Vespocyptera Townsend, 1927
- Genus Vibrissina Rondani, 1861
- Genus Vibrissomyia Townsend, 1912
- Genus Vibrissotheresia Reinhard, 1943
- Genus Vibrissovoria Townsend, 1919
- Genus Villanovia Strobl, 1910
- Genus Villeneuvenia Jacentkovsky, 1937
- Genus Villeneuvia Townsend, 1921
- Genus Villeneuvimyia Townsend, 1926
- Genus Visayalydina Townsend, 1926
- Genus Viviana Bigot, 1888 accepted as Viviania Rondani, 1861
- Genus Viviana Rondani, 1861 accepted as Viviania Rondani, 1861
- Genus Viviania Rondani, 1861 accepted as Fabricia Meigen, 1838
- Genus Vivianoidea Thompson, 1968
- Genus Vodigaster Walker, 1858 accepted as Oodigaster Macquart, 1854
- Genus Voria Robineau-Desvoidy, 1830
- Genus Voriella Malloch, 1930
- Genus Vorina Malloch, 1930
- Genus Wagneria Robineau-Desvoidy, 1830
- Genus Wahlbergia Zetterstedt, 1842
- Genus Walkeria Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Wardarina Mesnil in Lindner, 1953
- Genus Wattia Malloch, 1938
- Genus Wayneria Walker, 1849 accepted as Wagneria Robineau-Desvoidy, 1830
- Genus Weberia Robineau-Desvoidy, 1830
- Genus Websteriana Walton, 1914
- Genus Westwodia Robineau-Desvoidy, 1863 accepted as Elodia Robineau-Desvoidy, 1863
- Genus Westwoodia Herting, 1974 accepted as Westwodia Robineau-Desvoidy, 1863
- Genus Wiedmania Robineau-Desvoidy, 1863 accepted as Leiophora Robineau-Desvoidy, 1863
- Genus Willistonia Brauer & Bergenstamm, 1890
- Genus Winthellia Crosskey, 1967 accepted as Thyellina Mesnil, 1949
- Genus Winthemia Robineau-Desvoidy, 1830
- Genus Winthemiopsis Blanchard, 1963
- Genus Winthemya Rondani, 1859 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Winthemyia Villeneuve, 1910 accepted as Winthemia Robineau-Desvoidy, 1830
- Genus Wulpia Brauer & Bergenstamm, 1894 accepted as Brauerimyia Townsend, 1908
- Genus Xanthoactia Townsend, 1919
- Genus Xanthobasis Aldrich, 1934
- Genus Xanthocera Townsend, 1915
- Genus Xanthochaetona Townsend, 1934
- Genus Xanthodexia Wulp, 1891
- Genus Xanthoepalpodes Townsend, 1931
- Genus Xanthoepalpus Townsend, 1914
- Genus Xanthoerigone Townsend, 1927
- Genus Xanthoernestia Townsend, 1926
- Genus Xantholarvaevora Townsend, 1932
- Genus Xanthomelana Wulp, 1892 accepted as Xanthomelanodes Townsend, 1893
- Genus Xanthomelanodes Townsend, 1893
- Genus Xanthomelanopsis Townsend, 1917
- Genus Xanthooestrus Villeneuve, 1914
- Genus Xanthopelta Aldrich, 1934
- Genus Xanthophyllophila Townsend, 1927
- Genus Xanthophyto Townsend, 1916
- Genus Xanthopteromyia Townsend, 1926
- Genus Xanthotheresia Townsend, 1931
- Genus Xanthotrichius Townsend, 1934
- Genus Xanthozonella Townsend, 1927
- Genus Xanthozonopsis Townsend, 1916
- Genus Xenadmontia Townsend, 1915
- Genus Xenolophosia Villeneuve, 1926
- Genus Xenopelte Cameron, 1913 accepted as Rileya Brauer & Bergenstamm, 1893
- Genus Xenophasia Townsend, 1934
- Genus Xenophyxis Townsend, 1942 accepted as Xenopyxis Townsend, 1940
- Genus Xenoplagia Townsend, 1914
- Genus Xenopyxis Townsend, 1940
- Genus Xenorhynchia Malloch, 1938
- Genus Xenosturmia Mesnil in Lindner, 1944
- Genus Xeoprosopa Townsend, 1919
- Genus Xiphochaeta Mesnil, 1968
- Genus Xiphochaetina Mesnil, 1968
- Genus Xiphomyia Townsend, 1917
- Genus Xiphophasia Townsend, 1937
- Genus Xista Rondani, 1856 accepted as Xysta Meigen, 1824
- Genus Xistomima
- Genus Xylocamptomima Townsend, 1927
- Genus Xylotachina Brauer & Bergenstamm, 1891
- Genus Xysta Meigen, 1824
- Genus Xystomima Villeneuve, 1914
- Genus Yahuarmayoia Townsend, 1927
- Genus Yahuarphryno Townsend, 1927
- Genus Yahyarphryno
- Genus Ypophaemyia Townsend, 1935
- Genus Ypophaemyia Townsend, 1916
- Genus Zaida Robineau-Desvoidy, 1830
- Genus Zaira Robineau-Desvoidy, 1830
- Genus Zambesa Walker, 1856
- Genus Zambesoides Townsend, 1927
- Genus Zambesomima Mesnil, 1967
- Genus Zamimus Malloch, 1932
- Genus Zaria Walker, 1849 accepted as Zaira Robineau-Desvoidy, 1830
- Genus Zealandotachina Malloch, 1938
- Genus Zebromyia Malloch, 1929
- Genus Zelia Robineau-Desvoidy, 1830
- Genus Zelinda Robineau-Desvoidy, 1863
- Genus Zelindomyia Verbeke, 1961
- Genus Zelindopsis Villeneuve, 1943 accepted as Zelindopsis Anonymous, 1946
- Genus Zelindopsis Anonymous, 1946
- Genus Zeliomima Mesnil, 1976
- Genus Zelleria Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Zenais Robineau-Desvoidy, 1830 accepted as Meigenia Robineau-Desvoidy, 1830
- Genus Zenargomyia Crosskey, 1964
- Genus Zenillia Robineau-Desvoidy, 1830
- Genus Zenilliana Curran, 1927
- Genus Zetterstedtia Robineau-Desvoidy, 1863 accepted as Exorista Meigen, 1803
- Genus Zeuxia Meigen, 1826
- Genus Zeuxiotrix Mesnil, 1976
- Genus Zigyphomyia Townsend, 1916 accepted as Zizyphomyia Townsend, 1916
- Genus Ziminia Mesnil, 1963
- Genus Ziminiola Mesnil, 1978 accepted as Mesnilus Özdikmen, 2007
- Genus Zita Curran, 1927
- Genus Zizyphomyia Townsend, 1916
- Genus Zonalia Curran, 1934
- Genus Zonoepalpus Townsend, 1927
- Genus Zophomya Rondani, 1859 accepted as Zophomyia Macquart, 1835
- Genus Zophomyia Macquart, 1835
- Genus Zorella Robineau-Desvoidy, 1863 accepted as Lydella Robineau-Desvoidy, 1830
- Genus Zosteromeigenia Townsend, 1919
- Genus Zosteromyia Brauer & Bergenstamm, 1891
- Genus Zosteropsis Townsend, 1916
- Genus Zuanalia Curran, 1934
- Genus Zygobothria Mik, 1891
- Genus Zygocarcelia Townsend, 1927
- Genus Zygofrontina Townsend, 1915
- Genus Zygofrontinopsis Blanchard, 1959
- Genus Zygosturmia Townsend, 1911
- Genus Zygozenillia Townsend, 1927
- Family Tachiniscidae Kertész, 1903
- Family Tanyderidae Osten Sacken, 1880
- Family Tanyderophryneidae Rohdendorf, 1962 † accepted as Chaoboridae Edwards, 1932
- Family Tanypezidae Rondani, 1856
- Family Tephritidae Newman, 1834
- Family Teratomyzidae Colless & McAlpine, 1970
- Family Tethepomyiidae Grimaldi & Arillo, 2008 †
- Family Tethinidae accepted as Canacidae Jones, 1906
- Family Thaumaleidae Bezzi, 1913
- Family Therevidae Newman, 1834
- Family Tillyardipteridae Lukashevich & Shcherbakov, 1999 †
- Family Tipulidae Leach, 1815
- Family Tipulodictyidae Rohdendorf, 1962 †
- Family Tipulopleciidae Rohdendorf, 1962 †
- Family Trichoceridae Rondani, 1841
- Family Trixoscelidae Hendel, 1916 accepted as Heleomyzidae Westwood, 1840
- Family Trypetidae Loew, 1861 accepted as Tephritidae Newman, 1834
- Family Ulidiidae Macquart, 1835
- Family Ulurumyiidae Michelsen & Pape, 2017
- Family Uranorhagionidae Zhang, Yang & Ren, 2010 †
- Family Valeseguyidae Amorim & Grimaldi, 2006
- Family Vermileonidae Williston, 1886
- Family Vladipteridae Shcherbakov, 1995 †
- Family Vosilidae Vršanský & Ren in Vršanský, Ren & Shih, 2010 †
- Family Xenasteiidae Hardy, 1980
- Family Xylomidae accepted as Xylomyidae Verrall, 1901
- Family Xylomyidae Verrall, 1901
- Family Xylophagidae Fallén, 1810
- Family Yantaromyiidae Barták, 2020 †
- Family Zhangobiidae Evenhuis, 1994 † accepted as Pediciidae Osten Sacken, 1860
- Family Zhangsolvidae Nagatomi & Yang, 1998 †
- Genus Apystomimus Mostovski, 1999 †
- Genus Aschizomyia Grimaldi, 2018 †
- Order Embiodea
- Order Endopterygota incertae sedis
- Order Eoblattida †
- Order Ephemeroptera
- Order Eugeroptera †
- Order Geraroptera †
- Order Geroptera †
- Order Glosselytrodea †
- Order Grylloblattodea
- Order Hemiptera
- Order Homoptera accepted as Hemiptera
- Order Hymenoptera
- Order Hypoperlida †
- Order Insecta (awaiting allocation)
- Order Insecta incertae sedis
- Order Isoptera accepted as Blattodea
- Order Kukaloptera †
- Order Lepidoptera
- Order Lophioneurida †
- Order Mallophaga
- Order Mantodea
- Order Mantophasmatodea
- Order Mecoptera
- Order Mecopterida incertae sedis
- Order Megaloptera
- Order Megasecoptera †
- Order Miomoptera †
- Order Neoptera incertae sedis
- Order Neuroptera
- Order Notoptera
- Order Odonata
- Order Odonatoptera (awaiting allocation) †
- Order Odonatoptera incertae sedis
- Order Orthoptera
- Order Orthopterida incertae sedis
- Order Palaeodictyoptera †
- Order Palaeoptera incertae sedis
- Order Panorthoptera incertae sedis
- Order Paoliida †
- Order Paraneoptera (awaiting allocation)
- Order Perielytrodea †
- Order Permopsocida †
- Order Permotrichoptera †
- Order Phasmatodea
- Order Phasmida accepted as Phasmatodea
- Order Phasmoptera accepted as Phasmatodea
- Order Phthiraptera
- Order Plecoptera
- Order Polyneoptera incertae sedis
- Order Protelytroptera †
- Order Protoblattoidea †
- Order Protocoleoptera † accepted as Protelytroptera †
- Order Protodonata †
- Order Protoelytroptera †
- Order Protohemiptera †
- Order Protohymenoptera †
- Order Protorthoptera †
- Order Protozygoptera †
- Order Psocoptera
- Order Raphidioptera
- Order Siphonaptera
- Order Skleroptera †
- Order Strepsiptera
- Order Tarachoptera †
- Order Thripida incertae sedis
- Order Thysanoptera
- Order Thysanura accepted as Insecta
- Order Titanoptera †
- Order Trichoptera
- Order Zoraptera
- Order Zygentoma
- Genus Bifarius Tasch, 1961 †
- Genus Cyclocephalus Tasch, 1961 †
- Genus Hypatocephala Tasch, 1961 †
- Genus Permolimulinella Tasch, 1963 †
- Genus Strongylocephalus Tasch, 1961 †
- Class Protura
- Subphylum Myriapoda
- Subphylum Trilobitomorpha †
- Class Arachnomorpha (awaiting allocation)
- Class Arthropoda (awaiting allocation)
- Class Artiopoda †
- Class Crustaceomorpha incertae sedis †
- Class Dinocaridida †
- Class Labrophora incertae sedis
- Class Lamellipedia incertae sedis
- Class Megacheira †
- Class Thylacocephala †
- Class Xenocarida incertae sedis
- Order Canadaspidida † accepted as Hymenocarina †
- Order Cheloniellida †
- Order Emeraldellida † accepted as Arthropoda
- Order Fuxianhuiida †
- Order Habeliida †
- Order Hymenocarina †
- Order Isoxyida †
- Order Pectocaridida † accepted as Hymenocarina †
- Order Waptiida † accepted as Hymenocarina †
- Family Bomakellidae Fedonkin, 1987 †
- Family Burgessiidae Walcott, 1912 †
- Family Emeraldellidae Raymond, 1935 †
- Family Guangweicarididae Luo, Fu, Hu, Li, Hou, You, Pang & Liu, 2007 †
- Genus Aaveqaspis Peel & Stein, 2009 †
- Genus Acheronauta Pulsipher, Anderson, Wright, Kluessendorf, Mikulic & Schiffbauer, 2022 †
- Genus Arthroaspis Stein, Budd, Peel & Harper, 2013 †
- Genus Astutuscaris Jiao & Du, 2022 †
- Genus Bennettarthra Fayers, Trewin & Morrissey, 2010 †
- Genus Bushizheia O'Flynn & Liu in O'Flynn et al., 2020 †
- Genus Chuandianella Hou & Bergström, 1991 †
- Genus Dioxycaris Gürich, 1929 †
- Genus Dongshanocaris Hou, Bergström, Wang, Feng & Chen, 1999 †
- Genus Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Duraznovs Lara, Cariglino & Zavattieri in Lara et al., 2019 † accepted as Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Esmeraldacaris Waggoner, 2003 †
- Genus Fibulacaris Izquierdo-López & Caron, 2019 †
- Genus Kiisortoqia Stein, 2010 †
- Genus Kylinxia Zeng, Zhao, Niu, Zhu & Huang, 2020 †
- Genus Lihuacaris Jiao, Pates, Lerosey-Aubril, Ortega-Hernández, Yang, Lan & Zhang, 2021 †
- Genus Norikeya Tanaka, Siveter & Williams, 2013 †
- Genus Nothozoe Barrande, 1872 †
- Genus Nothozoe Barrande in Bigsby, 1868 † accepted as Nothozoe Barrande, 1872 †
- Genus Notozoe Zittel, 1885 † accepted as Nothozoe Barrande, 1872 †
- Genus Pakucaris Izquierdo-López & Caron, 2021 †
- Genus Pambdelurion Budd, 1998 †
- Genus Parvibellus Liu, Dunlop, Steiner & Shu, 2022 †
- Genus Pleuralata McCoy, Strother & Briggs, 2012 †
- Genus Pseudoangustidontus Van Roy & Tetlie, 2006 †
- Genus Pteroessa Hudson & Gosse, 1886
- Genus Sidneyia Walcott, 1911 †
- Genus Siriocaris Lagebro, Stein & Peel, 2009 †
- Genus Vermontcaris Pari, Briggs & Gaines, 2022 †
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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