Abepalpus Townsend, 1931 (current name source)
Abolodoria Townsend, 1934 (current name source)
Acampomintho Townsend, 1931 accepted as Acompomintho Villeneuve, 1927 (source of synonymy)
Acanthodotheca Townsend, 1918 (current name source)
Acemeigenia Townsend, 1927 accepted as Vibrissina Rondani, 1861 (source of synonymy)
Acemyiopsis Townsend, 1915 accepted as Ceracia Rondani, 1865 (source of synonymy)
Acephana Townsend, 1916 accepted as Anagonia Brauer & Bergenstamm, 1891 (source of synonymy)
Achaetoneuropsis Townsend, 1927 accepted as Lespesia Robineau-Desvoidy, 1863 (source of synonymy)
Acridiophaga Townsend, 1917 accepted as Blaesoxipha Loew, 1861 (source of synonymy)
Acromiodexia Townsend, 1931 accepted as Cholomyia Bigot, 1884 (source of synonymy)
Acronarista Townsend, 1908 accepted as Neaera Robineau-Desvoidy, 1830 (source of synonymy)
Acronaristopsis Townsend, 1919 accepted as Neaera Robineau-Desvoidy, 1830 (source of synonymy)
Actinactia Townsend, 1927 accepted as Ceromya Robineau-Desvoidy, 1830 (source of synonymy)
Actinochaetopsis Townsend, 1934 accepted as Actinochaeta Brauer & Bergenstamm, 1889 (source of synonymy)
Actinochaetopteryx Townsend, 1927 (current name source)
Actinocrocuta Townsend, 1935 accepted as Siphona Meigen, 1803 (source of synonymy)
Actinodoria Townsend, 1927 (current name source)
Actinominthella Townsend, 1928 (current name source)
Actinomintho Townsend, 1928 accepted as Polygaster Van der Wulp, 1890 (source of synonymy)
Actinophryno Townsend, 1928 accepted as Lixophaga Townsend, 1908 (source of synonymy)
Actinoprosopa Townsend, 1927 accepted as Houghia Coquillett, 1897 (source of synonymy)
Actinotachina Townsend, 1927 accepted as Lixophaga Townsend, 1908 (source of synonymy)
Actiopsis Townsend, 1917 accepted as Actia Robineau-Desvoidy, 1830 (source of synonymy)
Acucula Townsend, 1913 accepted as Dasiops Rondani, 1856 (source of synonymy)
Acuphocera Townsend, 1926 accepted as Cuphocera Macquart, 1845 (source of synonymy)
Adejeania Townsend, 1913 (current name source)
Adichosiops Townsend, 1932 accepted as Calliphora Robineau-Desvoidy, 1830 (source of synonymy)
Adidyma Townsend, 1935 (current name source)
Adipterites Townsend, 1938 † (current name source)
Admontiopsis Townsend, 1915 accepted as Admontia Brauer & Bergenstamm, 1889 (source of synonymy)
Adoryphorophaga Townsend, 1931 accepted as Myiopharus Brauer & Bergenstamm, 1890 (source of synonymy)
Aeolofrontina Townsend, 1928 accepted as Plagimasicera Townsend, 1915 (source of synonymy)
Africodexia Townsend, 1933 accepted as Dinera Robineau-Desvoidy, 1830 (basis of record)
Africodexia Townsend, 1933 accepted as Dinera Robineau-Desvoidy, 1830 (source of synonymy)
Africomusca Townsend, 1932 accepted as Pericallimyia Villeneuve, 1915 (source of synonymy)
Afrowohlfahrtia Townsend, 1919 accepted as Wohlfahrtia Brauer & Bergenstamm, 1889 (source of synonymy)
Agicuphocera Townsend, 1915 (current name source)
Agiebelia Townsend, 1933 † (current name source)
Aglummyia Townsend, 1912 (current name source)
Agriochaetops Townsend, 1934 accepted as Lepidodexia Brauer & Bergenstamm, 1891 (source of synonymy)
Alaccoprosopa Townsend, 1934 accepted as Microcerella Macquart, 1851 (source of synonymy)
Alaskophyto Townsend, 1915 accepted as Macquartia Robineau-Desvoidy, 1830 (source of synonymy)
Aldrichina Townsend, 1934 accepted as Calliphora Robineau-Desvoidy, 1830 (source of synonymy)
Aldrichocyptera Townsend, 1936 accepted as Cylindromyia Meigen, 1803 (source of synonymy)
Alitophasia Townsend, 1934 accepted as Catharosia Rondani, 1868 (source of synonymy)
Allenanicia Townsend, 1935 accepted as Metopia Meigen, 1803 (source of synonymy)
Almugmyia Townsend, 1911 accepted as Microchaetina Van der Wulp, 1891 (source of synonymy)
Alophorella Townsend, 1912 accepted as Phasia Latreille, 1804 (source of synonymy)
Alophorellopsis Townsend, 1927 accepted as Phasia Latreille, 1804 (source of synonymy)
Alophorophasia Townsend, 1927 accepted as Phasia Latreille, 1804 (source of synonymy)
Alophoropsis Townsend, 1915 accepted as Phasia Latreille, 1804 (source of synonymy)
Alouattamyia Townsend, 1931 accepted as Cuterebra Clark, 1815 (source of synonymy)
Alpinoplagia Townsend, 1931 (current name source)
Amazohoughia Townsend, 1934 (current name source)
Amblycoryphenes Townsend, 1918 accepted as Blaesoxipha Loew, 1861 (source of synonymy)
Ametadoria Townsend, 1927 (current name source)
Amicrotrichomma Townsend, 1927 (current name source)
Amobiopsis Townsend, 1915 accepted as Macronychia Rondani, 1859 (source of synonymy)
Amphiboliopsis Townsend, 1926 accepted as Billaea Robineau-Desvoidy, 1830 (source of synonymy)
Amphitropesa Townsend, 1933 (current name source)
Anadistichona Townsend, 1934 (current name source)
Anaeudora Townsend, 1933 (current name source)
Anametopochaeta Townsend, 1919 (current name source)
Anaperistommyia Townsend, 1926 accepted as Halydaia Egger, 1856 (source of synonymy)
Anaphorinia Townsend, 1927 accepted as Leptostylum Macquart, 1851 (source of synonymy)
Anaporia Townsend, 1919 accepted as Uramya Robineau-Desvoidy, 1830 (source of synonymy)
Anaravinia Townsend, 1934 accepted as Helicobia Coquillett, 1895 (source of synonymy)
Anazygosturmia Townsend, 1927 accepted as Drino Robineau-Desvoidy, 1863 (source of synonymy)
Andinomyia Townsend, 1912 (current name source)
Andinoravinia Townsend, 1917 accepted as Ravinia Robineau-Desvoidy, 1863 (source of synonymy)
Androcyptera Townsend, 1927 accepted as Cylindromyia Meigen, 1803 (source of synonymy)
Anemorilla Townsend, 1915 (current name source)
Anepalpus Townsend, 1931 (current name source)
Anhangabahuia Townsend, 1931 accepted as Houghia Coquillett, 1897 (source of synonymy)
Anoxynops Townsend, 1927 (current name source)
Anoxynopsella Townsend, 1935 accepted as Myiopharus Brauer & Bergenstamm, 1890 (source of synonymy)
Anthomyiopsis Townsend, 1916 (current name source)
Antistaseopsis Townsend, 1934 (current name source)
Apachemyia Townsend, 1908 accepted as Solieria Robineau-Desvoidy, 1849 (source of synonymy)
Apacheprospherysa Townsend, 1926 accepted as Myiopharus Brauer & Bergenstamm, 1890 (source of synonymy)
Aphantorhapha Townsend, 1919 (current name source)
Aphantorhaphopsis Townsend, 1926 (current name source)
Aphrimyobia Townsend, 1926 accepted as Atylostoma Brauer & Bergenstamm, 1889 (source of synonymy)
Aphriosphyria Townsend, 1927 accepted as Peleteria Robineau-Desvoidy, 1830 (source of synonymy)
Aphyrosphyria Townsend, 1927 accepted as Aphriosphyria Townsend, 1927 accepted as Peleteria Robineau-Desvoidy, 1830 (source of synonymy)
Apinocyptera Townsend, 1915 accepted as Cylindromyia Meigen, 1803 (source of synonymy)
Aplomyodoria Townsend, 1928 (current name source)
Aplomyopsis Townsend, 1927 (current name source)
Apostrophusia Townsend, 1932 accepted as Besseria Robineau-Desvoidy, 1830 (source of synonymy)
Arabiopsis Townsend, 1915 accepted as Sphenometopa Townsend, 1908 (source of synonymy)
Arachnidomyia Townsend, 1934 accepted as Sarcophaga Meigen, 1826 (source of synonymy)
Aravaipa Townsend, 1919 accepted as Distichona Van der Wulp, 1890 (source of synonymy)
Archinactia Townsend, 1927 accepted as Arrhinactia Townsend, 1927 (source of synonymy)
Arctophyto Townsend, 1915 accepted as Ateloglossa Coquillett, 1899 (source of synonymy)
Argentoepalpus Townsend, 1919 accepted as Epalpus Rondani, 1850 (source of synonymy)
Argoravinia Townsend, 1917 (current name source)
Argyreomyia Townsend, 1915 accepted as Leptostylum Macquart, 1851 (source of synonymy)
Argyrochaetona Townsend, 1919 (current name source)
Argyrodoria Townsend, 1927 accepted as Myiopharus Brauer & Bergenstamm, 1890 (source of synonymy)
Argyrophylacoides Townsend, 1932 accepted as Cadurcia Villeneuve, 1926 (current name source)

 Taxonomic remark

 for Atrophopoda Townsend, 1891

"In the interests of stability of nomenclature and taxonomy, Paradidyma Brauer & Bergenstamm, 1891 is treated here ... [details]

 Taxonomic remark

 for Ceratomyiella Townsend, 1891

"In the interests of stability of nomenclature and taxonomy, Paradidyma Brauer & Bergenstamm, 1891 is treated here ... [details]