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
- Order Embiodea
- Order Endopterygota incertae sedis
- Order Eoblattida †
- Order Ephemeroptera
- Order Eugeroptera †
- Order Geraroptera †
- Order Geroptera †
- Order Glosselytrodea †
- Order Grylloblattodea
- Order Hemiptera
- Family Acanaloniidae
- Family Acanthosomatidae Signoret, 1864
- Family Achilidae Stål, 1866
- Family Achilixiidae
- Family Aclerdidae
- Family Adelgidae Schouteden, 1909
- Family Adocimycolidae Poinar & Vega, 2023 †
- Family Aenictopecheidae
- Family Aetalionidae
- Family Agalliidae
- Family Aleyrodidae Westwood, 1840
- Family Alydidae Amyot & Serville, 1843
- Family Aneuridae
- Family Anoeciidae
- Family Anthocephalidae Kaddumi, 2005 †
- Family Anthocoridae Fieber, 1837
- Family Aphalaridae
- Family Aphelocheiridae
- Family Aphididae Latreille, 1802
- Family Aphidomorpha incertae sedis
- Family Aphrophoridae Amyot & Serville, 1843
- Family Aphylidae
- Family Apiomorphidae
- Family Apticoccidae Vea & Grimaldi, 2015 †
- Family Aradidae Spinola, 1837
- Family Archegocimicidae †
- Family Archescytinidae †
- Family Archiconiopterygidae Ansorge, 1996 †
- Family Archijassidae Becker-Migdisova, 1962 †
- Family Artheneidae
- Family Asiaticaphididae Żyła & Wegierek, 2020 †
- Family Asterolecaniidae
- Family Aviorrhynchidae Nel, Bourgoin, Engel & Szwedo in Nel et al., 2013 †
- Family Bajsaphididae Homan, Żyła & Wegierek, 2015 †
- Family Beesoniidae
- Family Belostomatidae Leach, 1815
- Family Bernaeidae †
- Family Berytidae Fieber, 1851
- Family Biturritiidae
- Family Blissidae Stål, 1862
- Family Boreoscytidae †
- Family Burmitaphididae Poinar & Brown, 2005 †
- Family Caliscelidae Amyot & Serville, 1843
- Family Callaphididae
- Family Calophyidae Vondráček, 1957
- Family Canadaphididae Richards, 1966 †
- Family Canopidae
- Family Cantacaderidae
- Family Capsidae
- Family Carayonemidae
- Family Carsidaridae
- Family Ceratocombidae
- Family Cercopidae Leach, 1815
- Family Cercopionidae †
- Family Cerococcidae
- Family Chiliocyclidae †
- Family Cicadellidae Latreille, 1825
- Family Cicadidae Batsch, 1789
- Family Cicadoidae accepted as Cicadidae Batsch, 1789
- Family Cicadoidea incertae sedis
- Family Cicadoprosbolidae †
- Family Cimicidae
- Family Cixiidae Spinola, 1839
- Family Clastopteridae Dohrn, 1859
- Family Coccidae
- Family Coleoscytidae †
- Family Colobathristidae
- Family Conchaspididae
- Family Coreidae Leach, 1815
- Genus Acanthocephala de Laporte, 1832
- Genus Acanthocerus Palisot de Beauvois, 1818
- Genus Acanthocolpura Breddin, 1900 accepted as Acantholybas Breddin, 1899
- Genus Acanthocoris Amyot & Serville, 1843
- Genus Acanthoderus Gistl, 1848 accepted as Acanthocerus Palisot de Beauvois, 1818
- Genus Acantholybas Breddin, 1899
- Genus Acanthotyla Stål, 1873
- Genus Acarihygia Brailovsky, 1993
- Genus Acroelytrum Mayr, 1865
- Genus Agathyrna Stål, 1861
- Genus Agriopocodemus Brailovsky & Cassis, 1999
- Genus Agriopocoris Miller, 1954
- Genus Agriopocoscelis Brailovsky & Cassis, 1999
- Genus Agriopocostella Brailovsky & Cassis, 1999
- Genus Alcocerniella Brailovsky, 1999
- Genus Althos Kirkaldy, 1904
- Genus Amblyomia Stål, 1870
- Genus Amblypelta Stål, 1873
- Genus Ammocoris Agassiz, 1846
- Genus Amorbus Dallas, 1852
- Genus Amygdonia Schouteden, 1938
- Genus Anacanthocoris Uhler, 1861
- Genus Anacanthus Uhler, 1860 accepted as Homoeocerus Burmeister, 1835
- Genus Anacestra Hsiao, 1964
- Genus Anadasynus China, 1934
- Genus Anasa Amyot & Serville, 1843
- Genus Anhomoeus Hsiao, 1963
- Genus Anisoscelis Berthold in Latreille, 1827
- Genus Anomalopetalops Brailovsky, 2021
- Genus Antanambecoris Brailovsky, 2001
- Genus Antipetalops Brailovsky, 2021
- Genus Arenocoris Hahn, 1834
- Genus Arioge Stål, 1867
- Genus Ashlockhygia Brailovsky & Ortega Leon, 1994
- Genus Aulacosterjanus Brailovsky, 2002
- Genus Aulacosternum Dallas, 1852
- Genus Australocolpura Brailovsky, 1993
- Genus Axinepterus Dispons, 1962
- Genus Badilloniella Brailovsky & Barrera, 2001
- Genus Ballhygia Brailovsky & Ortega Leon, 1994
- Genus Bathysolen Fieber, 1860
- Genus Baumannhygia Brailovsky, 1996
- Genus Bellamynacoris Brailovsky, 1997
- Genus Belonomus Uhler, 1869 accepted as Malvana Stål, 1865
- Genus Bermejanus Brailovsky, 2018
- Genus Beutelspacoris Brailovsky, 1987
- Genus Bitta Osuna, 1985
- Genus Bitta Osuna, 1977
- Genus Bothrostethus Fieber, 1860
- Genus Brachylybastella Brailovsky, 1996
- Genus Brachytes Westwood in Hope, 1842
- Genus Bulbocornis Brailovsky & Barrera, 2022
- Genus Buruhygia Brailovsky, 1993
- Genus Calyptohygia Brailovsky, 1998
- Genus Canungrantmictis Brailovsky, 2002
- Genus Carayonhygia Brailovsky, 2002
- Genus Carvalhygia Brailovsky, 1995
- Genus Catorhintha Stål, 1859
- Genus Cebreniscella Brailovsky, 1995
- Genus Cebrenistella Brailovsky, 1995
- Genus Centrocarenus Fieber, 1860
- Genus Centrocoris Kolenati, 1845
- Genus Cephalohygia Brailovsky, 2004
- Genus Ceraleptus Costa, 1847
- Genus Ceratoleptus Marshall, 1868 accepted as Ceraleptus Costa, 1847
- Genus Cerbus Hahn, 1831 accepted as Mictis Leach, 1814
- Genus Cercinthinus Kiritshenko, 1916
- Genus Cervantistellus Brailovsky & Barrera, 2005
- Genus Chariesterus de Laporte, 1832
- Genus Chelinidea Uhler, 1863
- Genus Chondrocera de Laporte, 1832
- Genus Cimolus Stål, 1862
- Genus Clavigralla Spinola, 1837
- Genus Clavigralloides Dolling, 1978
- Genus Cleotopetalops Brailovsky, 2000
- Genus Cletoliturus Brailovsky Alperowitz, 2011
- Genus Cletomorpha Mayr, 1866
- Genus Cletoscellus Brailovsky Alperowitz, 2011
- Genus Cletus Stål, 1859
- Genus Cneius Stål, 1865
- Genus Colpura Bergroth, 1894
- Genus Coraeus Lamarck, 1816 accepted as Coreus Fabricius, 1794
- Genus Cordysceles Hsiao, 1963
- Genus Coreiopsis Hong, 1984 †
- Genus Coreus Fabricius, 1794
- Genus Coribergia Casini, 1984
- Genus Coridus Rafinesque, 1815 accepted as Coreus Fabricius, 1794
- Genus Coriomeris Westwood in Hope, 1842
- Genus Coriomerus
- Genus Coroides Hong, 1984 †
- Genus Crinocerus Burmeister, 1835 accepted as Acanthocerus Palisot de Beauvois, 1818
- Genus Crinocoris Hahn & Herrich-Schäffer, 1842 accepted as Acanthocerus Palisot de Beauvois, 1818
- Genus Cristovallia Distant, 1920 accepted as Amblypelta Stål, 1873
- Genus Cryptopetalops Brailovsky, 2021
- Genus Dalader Amyot & Serville, 1843
- Genus Daphnasa Brailovsky, 1984
- Genus Dasynus Burmeister, 1834
- Species Dasynus fuscescens (Distant, 1911)
- Genus Derepteryx White, 1839
- Genus Deropteryx Amyot & Serville, 1843
- Genus Dianomictis O'Shea, 1981
- Genus Discogaster Burmeister, 1835
- Genus Discogaster Stål, 1867
- Genus Distachys Hsiao, 1964
- Genus Ditora Schouteden, 1938
- Genus Dollingocoris O'Shea, 1981
- Genus Echinovilga Dolling, 1977
- Genus Egerniella Brailovsky, 2000
- Genus Elasmocniella Brailovsky Alperowitz, 2011
- Genus Eludohygia Brailovsky, 1996
- Genus Enoplops Amyot & Serville, 1843
- Genus Eohydara Bergroth, 1925
- Genus Eretmophora Stein, 1860
- Genus Esparzaniella Brailovsky & Barrera, 2001
- Genus Euthochtha Mayr, 1865
- Genus Fabrictilis Osuna, 1985 accepted as Leptoglossus Guérin, 1831
- Genus Fabrictilis Osuna, 1977
- Genus Ferriantenna Cumming & Le Tirant, 2021 †
- Genus Ficana Stål, 1862
- Genus Gelonus Stål, 1865
- Genus Goniocerus Douglas & Scott, 1876
- Genus Gonocerus Berthold in Latreille, 1827
- Genus Gralliclava Dolling, 1978
- Genus Grosshygia Brailovsky, 1993
- Genus Grosshygioides Brailovsky, 1993
- Genus Grosshygoides
- Genus Grypocephalus Hsiao, 1963
- Genus Gyromastes
- Genus Haeckelia Kirkaldy, 1904 accepted as Leptoglossus Guérin, 1831
- Genus Haglundina Schouteden, 1938
- Genus Halohygia Brailovsky & Barrera, 2004
- Genus Harmostites Heer, 1853
- Genus Heisshygia Brailovsky, 1993
- Genus Heydonhygia Brailovsky & Barrera, 2005
- Genus Himellastella Brailovsky & Barrera, 1998
- Genus Holhymenia Lepeletier & Serville, 1825
- Genus Holymenia Burmeister, 1834
- Genus Homalocolpura Breddin, 1900
- Genus Hydarella Bergroth, 1925
- Genus Hydarellamixia Brailovsky, 1988
- Genus Hydascelis Brailovsky, 2010
- Genus Hypselonotus Hahn, 1826
- Genus Ichilocoris Brailovsky & Barrera, 2001
- Genus Indolomia Dolling, 1986
- Genus Jalina Distant, 1911
- Genus Jalinoides Dolling, 1974
- Genus Juaristiella Brailovsky, 1999
- Genus Junodis Van Reenen, 1976 †
- Genus Kalinckascelis Brailovsky, 1990
- Genus Karnaviexallis Brailovsky, 1984
- Genus Kekihygia Brailovsky, 1994
- Genus Kerzhnercryptes Brailovsky, 2002
- Genus Kerzhnerhygia Brailovsky, 1993
- Genus Kinabaluhygia Brailovsky, 1996
- Genus Kolleriella Schouteden, 1938
- Genus Kormijirania Brailovsky & Cassis, 1999
- Genus Kurnaina Distant, 1911
- Genus Kurrajongia Brailovsky & Monteith, 1998
- Genus Laevivilga Dolling, 1977
- Genus Laminiceps Costa, 1863
- Genus Larraldiella Brailovsky, 1999
- Genus Leptoglossus Guérin, 1831
- Genus Leptopelios Brailovsky, 2001
- Genus Leptostellana Brailovsky, 1997
- Genus Leptoxuthus Blöte, 1938
- Genus Lothygia Brailovsky, 1994
- Genus Loxocnemis Fieber, 1860
- Genus Lybas Dallas, 1852
- Genus Lygaeomictis Blöte, 1938 accepted as Mictis Leach, 1814
- Genus Machtima Amyot & Serville, 1843
- Genus Macina Villiers, 1954 accepted as Cletus Stål, 1859
- Genus Madagalaesus Brailovsky, 2007
- Genus Madura Stål, 1858
- Genus Maduranoides Brailovsky, 1988
- Genus Magnusantenna Du & Chen, 2021 †
- Genus Malvana Stål, 1865
- Genus Malvanaioides Brailovsky, 1990
- Genus Mamurius Stål, 1862
- Genus Manocoreus Hsiao, 1964
- Genus Margus Dallas, 1851 accepted as Althos Kirkaldy, 1904
- Genus Melucha Amyot & Serville, 1843
- Genus Meluchamixia Brailovsky, 1987
- Genus Meluchopetalops Breddin, 1903
- Genus Menenotus Laporte, 1832
- Genus Merocoris Perty, 1833
- Genus Meropalionellus Brailovsky, 2009
- Genus Mesocerus Reuter, 1888
- Genus Metapodius Westwood in Hope, 1842
- Genus Metopodus Amyot & Serville, 1843
- Genus Microphyllia Stål, 1870 accepted as Leptoglossus Guérin, 1831
- Genus Mictiopsis Hsiao, 1965
- Genus Mictis Leach, 1814
- Genus Mirabilamorbus Brailovsky, 2001
- Genus Missimhygia Brailovsky, 1993
- Genus Monasavuhygia Brailovsky, 1996
- Genus Moreyacoris Casini, 1989
- Genus Moronopelios Brailovsky, 1988
- Genus Mozena Amyot & Serville, 1843
- Genus Muzafferiana Ahmad & Perveen, 1983
- Genus Mycillus Distant, 1888 accepted as Pternistria Stål, 1873
- Genus Myctis Leach, 1814 accepted as Mictis Leach, 1814
- Genus Myrrhina Linnavuori, 1973
- Genus Namacus Amyot & Serville, 1843
- Genus Nannophyllia Bergroth, 1913 accepted as Leptoglossus Guérin, 1831
- Genus Narnia Stål, 1862
- Genus Neaira Linnavuori, 1973
- Genus Nectoquintius Brailovsky & Barrera, 2002
- Genus Nemocoris Sahlberg, 1848
- Genus Neohalohygia Brailovsky & Barrera, 2004
- Genus Neomevaniomorpha Dolling, 1986
- Genus Neomictis O'Shea in O'Shea & Schaefer, 1980
- Genus Neoquintius Brailovsky & Barrera, 1986
- Genus Neosciophyrus Brailovsky, 2003
- Genus Nepiohygia Brailovsky, 2003
- Genus Nishihygia Brailovsky, 2000
- Genus Nisoscolopocerus Barber, 1928
- Genus Notobitiella Hsiao, 1963
- Genus Notopteryx Hsiao, 1963
- Genus Nyttum Spinola, 1837
- Genus Odontocurtus Brailovsky Alperowitz, 2011
- Genus Omanocoris Kiritshenko, 1916
- Genus Onoremia Brailovsky, 1995
- Genus Ornytoides Blöte, 1936
- Genus Pachlyde Berthold, 1827 accepted as Pachylis Lepeletier & Serville, 1825
- Genus Pachlys Berthold in Latreille, 1827 accepted as Pachylis Lepeletier & Serville, 1825
- Genus Pachycolpura Breddin, 1900
- Genus Pachycolpuroides Brailovsky, 1993
- Genus Pachylis Lepeletier & Serville, 1825
- Genus Panstronhygia Brailovsky & Barrera, 2000
- Genus Papeocoris Brailovsky, 2003
- Genus Papuamorbus Brailovsky, 2006
- Genus Paradasynus China, 1934
- Genus Paralycambes Kormilev, 1954
- Genus Paramarcius Hsiao, 1964
- Genus Paramictis Hsiao, 1963
- Genus Paramyla Linnavuori, 1971
- Genus Paranoplocnemis Schouteden, 1938
- Genus Parypheroides Brailovsky & Barrera, 2020
- Genus Paryphes Burmeister, 1835
- Genus Pedulinus
- Genus Petalops Amyot & Serville, 1843
- Genus Petaloscelis Bergroth, 1893
- Genus Petascelis Signoret, 1847
- Genus Petersitocoris Brailovsky, 1990
- Genus Petersitocoroides Brailovsky, 1992
- Genus Philomorpha
- Genus Phthia Stål, 1862
- Genus Phthiacnemia Brailovsky, 2009
- Genus Phthiadema Brailovsky, 2009
- Genus Phthiarella Brailovsky, 2009
- Genus Phyllomictis Xun, Gao & Yin, 2024
- Genus Phyllomorpha Laporte, 1832
- Genus Phyllomorpha Montrouzier, 1861 accepted as Phyllomorpha Laporte, 1832
- Genus Phyllomorphus Laporte, 1832 accepted as Phyllomorpha Laporte, 1832
- Genus Physomerus Spinola, 1837
- Genus Physomerus Burmeister, 1835
- Genus Piezogaster Amyot & Serville, 1843
- Genus Piramurana Distant, 1911
- Genus Piramuranoides Dolling, 1974 †
- Genus Placophyllopus Blöte, 1938 accepted as Meluchopetalops Breddin, 1903
- Genus Platyvilga Dolling, 1977
- Genus Plectrocnemia Stål, 1873
- Genus Plectropoda Bergroth, 1894
- Genus Plectropodoides Schouteden, 1938
- Genus Pluotenia Brailovsky, 2001
- Genus Pomponatius Distant, 1904
- Genus Possaniella Brailovsky, 1999
- Genus Postleniatus Brailovsky, 2007
- Genus Priocnemioides Brailovsky, 2006
- Genus Prionolomiopsis O'Shea in O'Shea & Schaefer, 1980
- Genus Prionotylus Fieber, 1860
- Genus Procamptus Bergroth, 1925
- Genus Psammocoris Marshall, 1868
- Genus Pseudomictis Hsiao, 1963
- Genus Pseudomyla Dolling, 1986
- Genus Pseudopendulinus Schouteden, 1938
- Genus Pseudophelaus Schouteden, 1938
- Genus Pseudophloeus Burmeister, 1835 accepted as Arenocoris Hahn, 1834
- Genus Psilocoris Hsiao, 1964
- Genus Psilolomia Breddin, 1909
- Genus Pternistria Stål, 1873
- Genus Pterocolpura Blöte, 1936
- Genus Pungra Dolling, 1986
- Genus Raunothryallis Faúndez, 2016
- Genus Rhytidophthia Brailovsky, 2009
- Genus Riedelhygia Brailovsky & Barrera, 2005
- Genus Risbecocoris Izzard, 1949
- Genus Rochrosoma Reed, 1899
- Genus Romoniella Brailovsky & Barrera, 2001
- Genus Rondoneva Brailovsky & Barrera, 2003
- Genus Ruckesius Yonke, 1972
- Genus Sagotylus Mayr, 1865
- Genus Salamancaniella Brailovsky & Luna, 2000
- Genus Salgohygia Brailovsky & Barrera, 2004
- Genus Savius Stål, 1860
- Genus Schaeferhygia Brailovsky & Ortega Leon, 1994
- Genus Schaeferocoris O'Shea, 1980
- Genus Schuhgaster Brailovsky, 1993
- Genus Schwetzia Schouteden, 1938
- Genus Sciophyrella Brailovsky & Barrera, 1997
- Genus Sciophyritides Brailovsky & Barrera, 1997
- Genus Sciophyroides Brailovsky & Barrera, 1997
- Genus Sciophyropsis Brailovsky & Barrera, 1997
- Genus Sciophyrus Stål, 1873
- Genus Scioriedeli Brailovsky, 2004
- Genus Scolopocerus Uhler, 1875
- Genus Sephina Amyot & Serville, 1843
- Genus Sephinioides Brailovsky, 1996
- Genus Serranoniella Brailovsky & Barrera, 2001
- Genus Sethenira Spinola, 1837
- Genus Sibuanhygia Brailovsky, 1997
- Genus Sohnhygia Brailovsky, 2003
- Genus Soteloniella Brailovsky, 1999
- Genus Spartocera Laporte, 1832
- Genus Spartocerus Burmeister, 1835 accepted as Spartocera Laporte, 1832
- Genus Spathocera Stein, 1860
- Genus Spilopleura Stål, 1870
- Genus Stalifera Osuna, 1985 accepted as Leptoglossus Guérin, 1831
- Genus Stalifera Osuna, 1977
- Genus Stenoeurilla Brailovsky & Barrera, 2012
- Genus Stenoquintius Brailovsky & Barrera, 2002
- Genus Stenoscelidea Westwood in Hope, 1842
- Genus Stiroptus Stål, 1859
- Genus Strobilotoma Fieber, 1860
- Genus Sulawesihygia Brailovsky, 2000
- Genus Sundarellus Brailovsky & Barrera, 2020
- Genus Syromaster Germar, 1840
- Genus Syromastes Latreille in Cuvier, 1829
- Genus Syromastus Berthold in Latreille, 1827
- Genus Syromates Say, 1831
- Genus Tachycolpura Breddin, 1900
- Genus Tambourina Distant, 1911
- Genus Thasopsis O'Shea, 1980
- Genus Thasus Stål, 1865
- Genus Theognis Stål, 1862 accepted as Leptoglossus Guérin, 1831
- Genus Therapha Amyot & Serville, 1843
- Genus Therava Reh in Sorauer, 1932
- Genus Thryallis Linnavuori, 1973 accepted as Raunothryallis Faúndez, 2016
- Genus Tovarocoris Brailovsky, 1995
- Genus Trichovilga Dolling, 1977 †
- Genus Turrana Distant, 1911
- Genus Tylocryptus Horváth, 1932
- Genus Typhlocolpura Breddin, 1900
- Genus Uhleriella Matsumura, 1913
- Genus Ullrihygia Brailovsky & Barrera, 2003
- Genus Ulmicola Kirkaldy, 1909
- Genus Uranocoris Walker, 1871
- Genus Urartucoris Puchkov, 1979
- Genus Urartucoris Kment, Fent & Japoshvili, 2013
- Genus Vazquezitocoris Brailovsky, 1990
- Genus Veneza Osuna, 1977
- Genus Veneza Osuna, 1985 accepted as Leptoglossus Guérin, 1831
- Genus Verlusia Spinola, 1837
- Genus Viklundocoris Brailovsky, 2003
- Genus Vilgula Dolling, 1977 †
- Genus Villasitocoris Brailovsky, 1990
- Genus Vivianadema Brailovsky, 1987
- Genus Warishygia Brailovsky, 2003
- Genus Wasbauerellus Brailovsky, 2007
- Genus Weirhygia Brailovsky, 2001
- Genus Wilcoxina O'Shea, 1980
- Genus Woodwardhygia Brailovsky, 1993
- Genus Wygohygia Brailovsky, 1993
- Genus Xanthocolpura Breddin, 1900
- Genus Xenocolpura Blöte, 1936
- Genus Xiphares Stål, 1867 accepted as Chelinidea Uhler, 1863
- Genus Yasunahygia Brailovsky, 2003
- Genus Zettelniella Brailovsky, 2009
- Genus Zicca Amyot & Serville, 1843
- Genus Zoreva Amyot & Serville, 1843
- Genus Zygometapodus Brailovsky, 2018
- Family Corixidae Leach, 1815
- Family Creaphididae †
- Family Cryptococcidae
- Family Cryptorhamphidae
- Family Cryptostemmatidae
- Family Cuneocoridae †
- Family Curaliidae Schuh, Weirauch & Henry, 2008
- Family Curvicubitidae Hong, 1984 †
- Family Cydnidae Billberg, 1820
- Family Cymidae
- Family Cyrtocoridae
- Family Dactylopiidae
- Family Delphacidae Leach, 1815
- Family Deltocephalidae
- Family Derbidae Spinola, 1839
- Family Derbridae accepted as Derbidae Spinola, 1839
- Family Diaspididae
- Family Dictyopharidae Spinola, 1839
- Family Dinglidae Szwedo & Drohojowska in Drohojowska et al., 2020 † accepted as Miralidae Shcherbakov, 2020 †
- Family Dinidoridae
- Family Dipsocoridae
- Family Dorytocidae Emeljanov & Shcherbakov, 2018 †
- Family Dracaphididae Hong, Zhang, Guo & Heie, 2009 †
- Family Drepanosiphidae
- Family Dunstaniidae Tillyard, 1916 †
- Family Dysmorphoptilidae Handlirsch, 1906 †
- Family Ebboidae Perrichot, Nel, Guilbert & Neraudeau, 2006 †
- Family Elasmodemidae
- Family Electrococcidae Koteja, 2000 †
- Family Elektraphididae †
- Family Enicocephalidae Stål, 1860
- Family Epipygidae Hamilton, 2001
- Family Eriococcidae
- Family Eriosomatidae accepted as Aphididae Latreille, 1802
- Family Errhomenellidae
- Family Eumenotidae
- Family Eurybrachidae Stål, 1862
- Family Eurybrachyidae accepted as Eurybrachidae Stål, 1862
- Family Eurymelidae
- Family Evacanthidae
- Family Flatidae Spinola, 1839
- Family Fulgoridae Latreille, 1807
- Family Fulgorididae † accepted as Fulgoridiidae Handlirsch, 1939 †
- Family Fulgoridiidae Handlirsch, 1939 †
- Family Fulgoromorpha incertae sedis
- Family Gelastocoridae Kirkaldy, 1897
- Family Genaphididae †
- Family Gengidae
- Family Geocoridae Bärensprung, 1860
- Family Gerridae Leach, 1815
- Family Granulidae Hong, 1980 †
- Family Greenideidae
- Family Halimococcidae
- Family Hammanococcidae Koteja & Azar, 2008 †
- Family Hebridae Amyot & Serville, 1843
- Family Helotrephidae
- Family Hemiptera (awaiting allocation)
- Family Hemiptera incertae sedis
- Family Henicocoridae
- Family Hermatobatidae
- Family Heterogastridae Stål, 1872
- Family Heteroptera incertae sedis †
- Family Hispanocaderidae Golub, Popov & Arillo, 2012 †
- Family Hodgsonicoccidae Vea & Grimaldi, 2015 †
- Family Homaphididae accepted as Hormaphididae
- Family Homotomidae Heslop-Harrison, 1958
- Family Hormaphididae
- Family Hydrometridae
- Family Hylicellidae Evans, 1956 †
- Family Hylicidae
- Family Hyocephalidae
- Family Hypochthonellidae
- Family Hypsipterygidae
- Family Idioceridae
- Family Idiostolidae
- Family Ignotalidae Riek, 1973 †
- Family Ignotingidae Zhang, Golub, Popov & Shcherbakov, 2005 †
- Family Ingruidae †
- Family Inkaidae †
- Family Inoderbidae Shcherbakov & Emeljanov, 2021 †
- Family Ipsviciidae †
- Family Isolitaphidae Poinar, 2017 †
- Family Isometopidae
- Family Issidae Spinola, 1839
- Family Jankotejacoccidae Szwedo, Azar et Sendi, 2025 †
- Family Jascopidae †
- Family Jassidae
- Family Joppeicidae
- Family Jubisentidae Zhang, Ren & Yao, 2019 †
- Family Juraphididae Zyla, Blagoderov & Wegierek, 2014 †
- Family Jurocallidae Żyła & Wegierek, 2020 †
- Family Karabasiidae †
- Family Karanabidae †
- Family Katlasidae Luo, Jiang & Szwedo, 2020 †
- Family Kermesidae
- Family Kerridae accepted as Kerriidae Lindinger, 1937
- Family Kerriidae Lindinger, 1937
- Family Kinnaridae Muir, 1925
- Family Kobdocoridae Popov, 1986 †
- Family Kozariidae Vea & Grimaldi, 2015 †
- Family Kuwaniidae MacGillivray, 1921 †
- Family Lachnidae Koch, 1857
- Family Lalacidae Hamilton, 1990 †
- Family Largidae
- Family Latiscutellidae Pinto & Ornellas, 1974 † accepted as Cydnidae Billberg, 1820
- Family Lebanococcidae Koteja & Azar, 2008 †
- Family Lecanodiaspididae
- Family Ledridae accepted as Cicadellidae Latreille, 1825
- Family Leotichiidae
- Family Leptopodidae Brullé, 1836
- Family Lestoniidae
- Family Liadopsyllidae Martynov, 1927 †
- Family Ligavenidae †
- Family Liviidae Loew, 1879
- Family Lodevopsyllidiidae Boderau, Garrouste & Nel, 2024 †
- Family Lophopidae Stål, 1866
- Family Lutevanaphididae Szwedo, Lapeyrie & Nel, 2015 †
- Family Lygaeidae Schilling, 1829
- Family Machaeroidae accepted as Machaerotidae Stål, 1866
- Family Machaerotidae Stål, 1866
- Family Macrodrilidae Poinar, 2020 †
- Family Macropsidae accepted as Cicadellidae Latreille, 1825
- Family Macroveliidae
- Family Madeoveliidae
- Family Magnacicadiidae †
- Family Maguviopseidae Shcherbakov, 2011 †
- Family Malcidae Stål, 1866
- Family Malmopsyllidae Becker-Migdisova, 1985 †
- Family Margarodidae
- Family Matsucoccidae
- Family Medocostidae
- Family Meenoplidae
- Family Megarididae
- Family Membracidae Rafinesque, 1815
- Family Meschiidae Malipatil, 2014
- Family Mesogereonidae †
- Family Mesopentacoridae †
- Family Mesotrephidae †
- Family Mesoveliidae Douglas & Scott, 1867
- Family Micrococcidae
- Family Micronectidae Jaczewski, 1924
- Family Microphysidae
- Family Mimarachnidae Shcherbakov, 2007 †
- Family Mindaridae
- Family Minlagerrontidae Chen, Szwedo & Wang, 2019 †
- Family Miralidae Shcherbakov, 2020 †
- Family Miridae Hahn, 1831
- Family Monophlebidae Signoret, 1875
- Family Myerslopiidae
- Family Nabidae Costa, 1853
- Family Naucoridae Leach, 1815
- Family Neazoniidae Szwedo, 2007 †
- Family Neopsylloididae †
- Family Nepidae Latreille, 1802
- Family Nepoidea incertae sedis
- Family Nicomiidae
- Family Ninidae
- Family Nogodinidae Melichar, 1898
- Family Notonectidae Latreille, 1802
- Family Ochteridae Kirkaldy, 1906
- Family Ochteroidea incertae sedis †
- Family Omaniidae Cobben, 1970
- Family Ortheziidae Amyot & Serville, 1843
- Family Oviparosiphidae Shaposhnikov, 1979 †
- Family Oxycarenidae
- Family Pachygronthidae
- Family Pachymeridiidae †
- Family Pachynomidae Stål, 1873
- Family Palaeoaphididae †
- Family Palaeoleptidae Poinar, 2009 †
- Family Palaeontinidae Handlirsch, 1906 †
- Family Palaeotanyrhinidae Poinar, Brown & Kóbor, 2022 †
- Family Paraknightiidae Evans, 1950 †
- Family Paraphrynoveliidae
- Family Paraprotopsyllidiidae Hakim, Azar, Szwedo, Drohojowska & Huang, 2021 †
- Family Parvaverrucosidae Poinar & Brown, 2006 †
- Family Pbyllocephalidae accepted as Pentatomidae Leach, 1815
- Family Peataspidae
- Family Peloridiidae
- Family Pemphigidae accepted as Aphididae Latreille, 1802
- Family Pennygullaniidae Koteja & Azar, 2008 †
- Family Pentatomidae Leach, 1815
- Family Pereboriidae Zalessky, 1930 †
- Family Perforissidae Shcherbakov, 2007 †
- Family Permoridiidae Burckhardt, Nel, Raisch, Poschmann, 2022 †
- Family Phacopteronidae
- Family Phenacoleachiidae
- Family Phloeidae
- Family Phoenicococcidae
- Family Phyllocephalidae accepted as Pentatomidae Leach, 1815
- Family Phylloxeridae Herrich-Schaeffer, 1854
- Family Phymatidae
- Family Piesmatidae
- Family Piesmidae accepted as Piesmatidae
- Family Pincombeidae †
- Family Pityococcidae
- Family Plataspidae
- Family Plataspididae accepted as Plataspidae
- Family Pleidae
- Family Plokiophilidae
- Family Polyctenidae
- Family Postopsyllidiidae Hakim, Azar & Huang, 2019 †
- Family Pricecoridae Pinto & Ornellas, 1974 † accepted as Cydnidae Billberg, 1820
- Family Primipentatomidae Yao, Cai, Rider & Ren, 2013 †
- Family Probascaniidae †
- Family Procercopidae Handlirsch, 1906 †
- Family Progonocimicidae Handlirsch, 1906 †
- Family Propreocoridae Popov, Dolling & Whalley, 1994 †
- Family Prosbolecicadidae †
- Family Prosbolidae Handlirsch, 1906 †
- Family Prosbolopseidae †
- Family Protocoridae †
- Family Protopsyllidiidae Becker-Migdisova, 1960 †
- Family Pseudococcidae Heymons, 1915
- Family Psyliidae accepted as Psyllidae Latreille, 1807
- Family Psyllidae Latreille, 1807
- Family Pterocimicidae †
- Family Putoidae
- Family Pyrrhocoridae
- Family Qinococcidae Wu, 2022
- Family Rasnitsynaphididae Homan & Wegierek, 2011 †
- Family Reduviidae Latreille, 1807
- Family Rhopalidae
- Family Rhyparochromidae Amyot & Serville, 1843
- Family Ricaniidae Amyot & Audinet-Serville, 1843
- Family Saldidae
- Family Scaphocoridae †
- Family Schizopteridae Reuter, 1891
- Family Scutelleridae Leach, 1815
- Family Scytinopteridae Handlirsch, 1906 †
- Family Scytinopteroidea incertae sedis †
- Family Serpentivenidae †
- Family Shaposhnikoviidae †
- Family Shurabellidae †
- Family Simulaphididae Shcherbakov, 2007 †
- Family Sinaphididae Zhang et al., 1989 †
- Family Sinoalidae Wang & Szwedo, 2012 †
- Family Sinojuraphididae Huang & Nel, 2008 †
- Family Steingeliidae Morrison, 1927 †
- Family Stemmocryptidae
- Family Stenocephalidae
- Family Stenoviciidae Evans, 1956 †
- Family Stictococcidae
- Family Surijokocixiidae Shcherbakov, 2000 †
- Family Szeiiniidae Zhang, Jiang, Szwedo & Zhang, 2021 †
- Family Tachardiidae
- Family Taimyrocoridae Popov, 2016 †
- Family Tajmyraphididae Kononova, 1975 †
- Family Termitaphididae
- Family Tessaratomidae Stål, 1865
- Family Tettigarctidae Distant, 1905
- Family Tettigellidae
- Family Tettigometridae
- Family Thaumastellidae
- Family Thaumastocoridae Kirkaldy, 1908
- Family Thelaxidae
- Family Thyreocoridae
- Family Tibicinidae
- Family Tingidae Laporte, 1833
- Family Tingididae accepted as Tingidae Laporte, 1833
- Family Torirostratidae Yao, Cai, Shih & Engel, 2014 †
- Family Triassocoridae Tillyard, 1922 †
- Family Triozidae Loew, 1879
- Family Tropiduchidae Stål, 1866
- Family Typhlocybidae accepted as Cicadellidae Latreille, 1825
- Family Ulopidae accepted as Cicadellidae Latreille, 1825
- Family Urostylidae Dallas, 1851 accepted as Urostylididae
- Family Urostylididae
- Family Veliidae Amyot & Serville, 1843
- Family Velocipedidae Bergroth, 1891
- Family Venicoridae Yao, Ren & Cai, 2012 † accepted as Kobdocoridae Popov, 1986 †
- Family Vetanthocoridae Yao, Cai & Ren, 2006 †
- Family Vianaididae
- Family Weiwoboidae Lin, Szwedo, Huang & Stroiński, 2010 †
- Family Xulsigiidae Szwedo, Weis & Nel, 2017 †
- Family Xylococcidae Pergrande, 1898
- Family Yetkhatidae Song, Szwedo & Bourgoin, 2019 †
- Family Yuripopovinidae Azar, Nel, Engel, Garrouste & Matocq, 2011 †
- Genus Lodevopsyllidium Boderau, Garrouste & Nel, 2024 †
- 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 Neuropteroidea incertae sedis †
- 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 †
- Genus Youti Smith, Long, Dhungana, Dobson, Yang & Zhang, 2024 †
- 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 Ecdysozoa 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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