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
- 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
- Genus Abgrallaspis Balachowsky, 1948
- Genus Abiscodiaspis accepted as Adiscodiaspis Marchal, 1909
- Genus Abrallaspis accepted as Abgrallaspis Balachowsky, 1948
- Genus Acanthaspidiotus Borchsenius & Williams, 1963
- Genus Acanthomytilus Borkhsenius, 1947
- Genus Achionaspis Takagi, 1970
- Genus Achorophora Brimblecombe, 1957
- Genus Acontonidia Brimblecombe, 1957
- Genus Actenaspis Leonardi, 1906
- Genus Acutaspis Ferris, 1941
- Genus Adiscodiaspis Marchal, 1909
- Genus Adiscofiorinia Leonardi, 1906
- Genus Affirmaspis MacGillivray, 1921
- Genus Afiorinia Takagi, 1970
- Genus Africaspis MacGillivray, 1921
- Genus Africonidia McKenzie, 1947
- Genus Agbrallaspis accepted as Abgrallaspis Balachowsky, 1948
- Genus Agrophaspis Borchsenius & Williams, 1963
- Genus Albastaspis MacGillivray, 1921
- Genus Albataspis MacGillivray, 1921 accepted as Albastaspis MacGillivray, 1921
- Genus Aleucaspis Takagi, 1977
- Genus Alioides Brimblecombe, 1958
- Genus Allantomytilus Leonardi, 1898
- Genus Aloaspis Williams, 1955
- Genus Ambigaspis MacGillivray, 1921
- Genus Ametrochaspis MacGillivray, 1921
- Genus Amphisoma Takagi, 1995
- Genus Anaimalaia Takagi, 1995
- Genus Anamaspis Leonardi, 1906
- Genus Anamefiorinia Leonardi, 1906
- Genus Anaspidiotus Borchsenius & Williams, 1963
- Genus Anastomoderma Beardsley, 1966
- Genus Anatolaspis Bodenheimer, 1951
- Genus Ancepaspis Ferris, 1920
- Genus Andaspis MacGillivray, 1921
- Genus Annonogena Takagi, 2008
- Genus Annulaspis Ferris, 1938
- Genus Anoplaspis Leonardi, 1898
- Genus Anotaspis Ferris, 1941
- Genus Antakaspis Mamet, 1960
- Genus Anzaspis Henderson, 2011
- Genus Aomidiella
- Genus Aonidia Targioni-Tozzetti, 1868
- Genus Aonidiae
- Genus Aonidiella Berlese & Leonardi, 1895
- Genus Aonidomytilus Leonardi, 1903
- Genus Apteronidia Leonardi, 1900
- Genus Archangelskaia Bodenheimer, 1951
- Genus Archaspis Bodenheimer, 1943
- Genus Artemisaspis Borkhsenius, 1949
- Genus Arundaspis Borkhsenius, 1949
- Genus Aspidaspis Ferris, 1938
- Genus Aspidiclla
- Genus Aspidicotus
- Genus Aspidiella Leonardi, 1898
- Genus Aspidioides MacGillivray, 1921
- Genus Aspidiotes Bouché, 1844 accepted as Aspidiotus Bouché, 1833
- Genus Aspidiotis
- Genus Aspidiotus Bouché, 1833
- Genus Aspidious
- Genus Aspidites Berlese & Leonardi, 1896
- Genus Aspidoides MacGillivray, 1921 accepted as Aspidioides MacGillivray, 1921
- Genus Aspidonymus Brimblecombe, 1957
- Genus Asymmetraspis MacGillivray, 1921
- Genus Augulaspis MacGillivray, 1921
- Genus Aulacaspis Cockerell, 1893
- Genus Aulocaspis
- Genus Austromaskellia Lindinger, 1943 accepted as Maskellia Fuller, 1897
- Genus Avidovaspis Gerson & Davidson, 1974
- Genus Bakeraspis MacGillivray, 1921
- Genus Balachowskiella Kaussari, 1955
- Genus Balachowskyella
- Genus Balaspis Hall, 1946
- Genus Banahaoa Takagi, 2003
- Genus Bantuaspis
- Genus Bantudiaspis Hall, 1941
- Genus Batarasa Takagi, 2009
- Genus Benaparlatoria Balachowsky, 1953
- Genus Berlesaspidiotus MacGillivray, 1921
- Genus Berlesaspis MacGillivray, 1921
- Genus Berleseaspis
- Genus Bigymnaspis Balachowsky, 1958
- Genus Borchseniaspis Zahradník, 1959
- Genus Brainaspis MacGillivray, 1921
- Genus Brimblecombia Normark, 2019
- Genus Caia Williams, 1963
- Genus Cameronaspis Takagi, Tho Yow Pong & Khoo Soo Ghee, 1988
- Genus Canaspis MacGillivray, 1921
- Genus Carulaspis McGillivray, 1921
- Genus Cephalaspidiotus Takagi, 2003
- Genus Cephalaspis MacGillivray, 1921
- Genus Chaetaonidia
- Genus Charlina González, 2016
- Genus Chemnaspidiotus MacGillivray, 1921
- Genus Chentraspis Leonardi, 1897
- Genus Chilesaphes González, 2016
- Genus Chimania Munting, 1970
- Genus Chinaspis Gómez-Menor Ortega, 1954
- Genus Chionaspis Signoret, 1869
- Genus Chlidaspis Borkhsenius, 1949
- Genus Chorizaspidiotus MacGillivray, 1921
- Genus Chortinaspis Ferris, 1938
- Genus Chrisomphalus
- Genus Chrysomphalus Ashmead, 1880
- Genus Chrysomplus
- Genus Chrysophalus
- Genus Chuaspis Tao & Wong, 1982
- Genus Chusqueaspis Amouroux, 2020
- Genus Circodiaspis Tang, 1986
- Genus Circulaspis MacGillivray, 1921
- Genus Clavaspidiotus Takagi & Kawai, 1966
- Genus Clavaspis MacGillivray, 1921
- Genus Clavataspis
- Genus Coccomytilus Leonardi, 1898
- Genus Cockerellaspis MacGillivray, 1921
- Genus Collubia Munting, 1968
- Genus Comstockaspis MacGillivray, 1921
- Genus Comstockiella Cockerell, 1896
- Genus Contagaspis
- Genus Contigaspis McGillivray, 1921
- Genus Cooleyaspis MacGillivray, 1921
- Genus Cornimytilus Borkhsenius, 1963
- Genus Cornuaspis MacGillivray, 1921
- Genus Coronaspis MacGillivray, 1921
- Genus Costalimaspis Lepage, 1937
- Genus Crassaspidiotus Takagi, 1969
- Genus Crassaspis Ferris, 1941
- Genus Credodiaspis MacGillivray, 1921
- Genus Crenulaspidiotus MacGillivray, 1921
- Genus Crockeraspis Takagi, 2000
- Genus Cruptoparlatoreopsis
- Genus Cryptaspidiotus Lindinger, 1910
- Genus Cryptaspidus Lindinger, 1910
- Genus Crypthemichionaspis Lindinger, 1911
- Genus Cryptodiaspis Lindinger, 1909
- Genus Cryptoparlatorea Lindinger, 1905
- Genus Cryptoparlatoreopsis Borkhsenius, 1947
- Genus Cryptoparlatoria
- Genus Cryptophyllaspis Cockerell, 1897
- Genus Cryptoselenaspidus
- Genus Cupidaspis MacGillivray, 1921
- Genus Cupressaspis Borkhsenius, 1962
- Genus Cynodontaspis Takagi, 1962
- Genus Dactylaspis Ferris, 1937
- Genus Daraspis Hall, 1946
- Genus Davidsonaspis Normark, 2014
- Genus Decoraspis Ferris, 1955
- Genus Dentachionaspis MacGillivray, 1921
- Genus Dentaspis MacGillivray, 1921
- Genus Depidosaphes
- Genus Diaonidia Takahashi, 1956
- Genus Diaphoraspis Brimblecombe, 1957
- Genus Diaspidiotus Berlese, 1896
- Genus Diaspidistis Hempel, 1900
- Genus Diaspidopus Brimblecombe, 1959
- Genus Diaspis Costa, 1828
- Genus Diastolaspis Brimblecombe, 1959
- Genus Diaulacaspis Takahashi, 1942
- Genus Dichosoma Brimblecombe, 1957
- Genus Dicirculaspis Ben-Dov, 1988
- Genus Diclavaspis Balachowsky, 1956
- Genus Dinaspidiotus
- Genus Dinaspis Leonardi, 1911
- Genus Discodiaspis Koronéos, 1934
- Genus Doriopus Brimblecombe, 1959
- Genus Ductofrontaspis
- Genus Dungunia Takagi, 1993
- Genus Duplachionaspis MacGillivray, 1921
- Genus Duplaspidiotus MacGillivray, 1921
- Genus Duplaspis Goux, 1937
- Genus Dycryptaspis
- Genus Dynaspidiotus Thiem & Gerneck, 1934
- Genus Emmereziaspis Mamet, 1941
- Genus Entaspidiotus Macgillivray, 1921
- Genus Ephedraspis Borkhsenius, 1949
- Genus Epidiaspis Cockerell, 1899
- Genus Epifiorinia Takagi, 1970
- Genus Eremaspis Bodenheimer, 1951
- Genus Eremiaspis Balachowsky, 1951
- Genus Eremohallaspis Bodenheimer, 1951
- Genus Essigaspis Macgillivray, 1921
- Genus Eucleaspis
- Genus Eucornuaspis Borkhsenius, 1963
- Genus Eudinaspis Lizer y Trelles, 1942
- Genus Eugreeniella Brimblecombe, 1958
- Genus Eulaingia Brimblecombe, 1958
- Genus Eulepidosaphes Borchsenius & Williams, 1963
- Genus Euvoraspis
- Genus Evallaspis Lupo, 1939
- Genus Evaspidiotus Leonardi, 1898 accepted as Aspidiotus Bouché, 1833
- Genus Exuviaspis Ferris, 1941
- Genus Faureaspis
- Genus Felixiella de Almeida, 1974
- Genus Fernaldanna MacGillivray, 1921
- Genus Fernaldella Leonardi, 1903
- Genus Fernaldiella Sanders, 1906
- Genus Ferreroaspis Kozar, 1983
- Genus Ferrisaspis MacGillivray, 1921
- Genus Ferrisi
- Genus Ferrisidea Borkhsenius, 1965
- Genus Fijifiorina Williams & Watson, 1988
- Genus Fijifiorinia
- Genus Finaspis Hall, 1946
- Genus Fiorina Signoret, 1869 accepted as Fiorinia Targioni-Tozzetti, 1869
- Genus Fiorinia Targioni-Tozzetti, 1869
- Genus Fisanotargionia Kaussari & Balachowsky, ? 1954
- Genus Fissuraspis Ferris, 1937
- Genus Forbesaspis MacGillivray, 1921
- Genus Forebesaspis
- Genus Formosaspis Takahashi, 1932
- Genus Fraseraspis Takagi, 1999
- Genus Froggattiella Leonardi, 1900
- Genus Fulaspis Balachowsky, 1952
- Genus Fundaspis MacGillivray, 1921
- Genus Furcaspis Lindinger, 1908
- Genus Furchadaspis MacGillivray, 1921
- Genus Furchadiaspis Hall, 1941 accepted as Furchadaspis MacGillivray, 1921
- Genus Fusilaspis MacGillivray, 1921
- Genus Gadaspis Hall, 1946
- Genus Galeomytilus Takagi, 1995
- Genus Galeraspis Mamet, 1939
- Genus Gannaspis Takagi, 2019
- Genus Genaparlatoria Macgillivray, 1921
- Genus Genistaspis Bodenheimer, 1951
- Genus Geodiaspis Tippins & Howell, 1973
- Genus Getulaspis Balachowsky, 1954
- Genus Gomezmenoraspis Balachowsky, 1953
- Genus Gomphaspidiotus Borchsenius & Williams, 1963
- Genus Gonaspidiotus MacGillivray, 1921
- Genus Gramenaspis Macgillivray, 1921
- Genus Graphaspis Macgillivray, 1921
- Genus Greenaspis Macgillivray, 1921
- Genus Greenidiella Lindinger, 1943 accepted as Greeniella Macgillivray, 1921
- Genus Greeniella Macgillivray, 1921
- Genus Greenoidea Macgillivray, 1921
- Genus Guineaspis Balachowsky, 1952
- Genus Guizhoaspis Young, 1986
- Genus Gymnaspis Newstead, 1898
- Genus Gynandraspis Balachowsky & Matile-Ferrero, 1980
- Genus Haliaspis Takagi, 1963
- Genus Hallaspidiotus
- Genus Haplaspis Borkhsenius, 1949
- Genus Heimaspis Balachowsky & Ferrero, 1967
- Genus Helaspis McKenzie, 1963 accepted as Mckenzieana Meng & Xing, 2022
- Genus Helenococcus Liu & Howell, 1997
- Genus Hemaspidis Macgillivray, 1921
- Genus Hemiaspis Macgillivray, 1921 accepted as Hemaspidis Macgillivray, 1921
- Genus Hemiberlesea Lindinger, 1908 accepted as Hemiberlesia Leonardi, 1897
- Genus Hemiberlesia Leonardi, 1897
- Genus Hemiberlesiana Thiem & Gerneck, 1934
- Genus Hemiberlesiella Thiem & Gerneck, 1934
- Genus Hemichionaspis Cockerell, 1897
- Genus Hemigymnaspis
- Genus Hendaspidiotus Macgillivray, 1921
- Genus Hendersonaspis Normark, 2019
- Genus Heteraspis Leonardi, 1914 accepted as Aonidiella Berlese & Leonardi, 1895
- Genus Himalaspis Takagi, 2007
- Genus Hovaspis Mamet, 1954
- Genus Howardia Berlese & Leonardi, 1896
- Genus Hulaspis Hall, 1946
- Genus Hybridaspis Green, 1926
- Genus Hyparrheniaspis Ghabbour & Hamon, 1998
- Genus Hypaspidiotus Takahashi, 1956
- Genus Icaraspidiotus Takagi, 2000
- Genus Ichthaspis
- Genus Ichthyaspis Takagi, 1970
- Genus Imerinaspis Mamet, 1954
- Genus Inchoaspis Macgillivray, 1921
- Genus Incisaspis
- Genus Insaspidiotus
- Genus Insulaspis Mamet, 1950
- Genus Ischnafiorinia Macgillivray, 1921
- Genus Ischnaspis Douglas, 1887
- Genus Jaapia Lindinger, 1914
- Genus Japaspidiotus Takagi & Kawai, 1966
- Genus Jnsulaspis
- Genus Kandraspis Mamet, 1960
- Genus Keralaspis Takagi, 2007
- Genus Kochummenaspis Takagi, 2003
- Genus Koroneaspis Bodenheimer, 1943
- Genus Kuchingaspis Takagi, 2005
- Genus Kuwanaspis Macgillivray, 1921
- Genus Kyphosoma Takagi, 1993
- Genus Labidaspis
- Genus Laingaspis Borchsenius & Williams, 1963
- Genus Lapazia Ferris, 1937
- Genus Lapidaspis Borchsenius & Williams, 1963
- Genus Larutaspis Takagi, 2005
- Genus Lattaspidiotus Macgillivray, 1921
- Genus Ledaspis Hall, 1946
- Genus Leonardaspis Macgillivray, 1921
- Genus Leonardiana
- Genus Leonardianna Macgillivray, 1921
- Genus Lepidaspidis Macgillivray, 1921
- Genus Lepidosaphes Shimer, 1868
- Genus Lepidosaphis
- Genus Lepidosaphoides Lindinger, 1930
- Genus Leptaspis Hardy & Williams, 2018
- Genus Leptodiaspis Takagi, 2011
- Genus Leucaspidopsis Lindinger, 1932
- Genus Leucaspis Targioni-Tozzetti, 1869
- Genus Leucodiaspis Signoret, 1869 accepted as Leucaspis Targioni-Tozzetti, 1869
- Genus Ligaspis Takagi, 2002
- Genus Ligulaspis Macgillivray, 1921
- Genus Lindingaspis Macgillivray, 1921
- Genus Lindingeria Macgillivray, 1921
- Genus Lindingraspis
- Genus Lineaspis Macgillivray, 1921
- Genus Lopholeucaspis Balachowsky, 1953
- Genus Loranthaspis Cockerell & Bueker, 1930
- Genus Lyraspis Ferris, 1938
- Genus Madagaspis Mamet, 1950
- Genus Madaparlaspis Mamet, 1962
- Genus Magnospinus Munting, 1970
- Genus Malleolaspis Ferris, 1941
- Genus Mammata Munting, 1969
- Genus Mancaspis Ferris, 1941
- Genus Mangaspis Takagi & Kondo, 1997
- Genus Maniaspis Borkhsenius, 1964
- Genus Marchalaspis Macgillivray, 1921
- Genus Marchaliella Bodenheimer, 1951
- Genus Marginaspis Hall, 1946
- Genus Marlattaspis Macgillivray, 1921
- Genus Maskellana Macgillivray, 1921 accepted as Maskellanna Macgillivray, 1921
- Genus Maskellanna Macgillivray, 1921
- Genus Maskellia Fuller, 1897
- Genus Maskellia Fuller, 1897, nom. nud. accepted as Maskellia Fuller, 1897
- Genus Mauritiaspis Mamet, 1939
- Genus Mckenzieana Meng & Xing, 2022
- Genus Medangaspis Takagi, 1999
- Genus Megacanthaspis Takagi, 1961
- Genus Megalodiaspis Paoli, 1916
- Genus Megaspidiotus Brimblecombe, 1955
- Genus Melanasois
- Genus Melanaspis Cockerell, 1897
- Genus Melayumytilus Takagi, 1992
- Genus Melenaspis
- Genus Melissoaspis Ben-Dov, 2010
- Genus Melonaspis
- Genus Mempelaspis Takagi, 2000
- Genus Mercetaspis Menor, 1927
- Genus Mesoselenaspidus Pinto da Fonseca, 1970
- Genus Metandaspis Williams, 1963
- Genus Metaspidiotus Takagi, 1957
- Genus Microparlatoria Takahashi, 1956
- Genus Mimeraspis Brimblecombe, 1957
- Genus Mimusaspis Mamet, 1942
- Genus Miscanthaspis Takagi, 1961
- Genus Mitiella
- Genus Mitraspis Ferris, 1941
- Genus Mitulaspidis
- Genus Mitulaspis Macgillivray, 1921
- Genus Mixaspis Takahashi, 1932
- Genus Mohelnaspis Šulc, 1937
- Genus Monaonidiella Macgillivray, 1921
- Genus Mongrovaspis Bodenheimer, 1951
- Genus Moraspis Hall, 1946
- Genus Morganella Cockerell, 1897
- Genus Multispinaspis Munting, 1969
- Genus Murataspis Balachowsky & Richardeau, 1942
- Genus Mycetaspis Cockerell, 1897
- Genus Myrtaspis Takagi, 1999
- Genus Myrtophila Brimblecombe, 1957
- Genus Mytiella Hoke, 1921
- Genus Mytilaspis Signoret, 1868
- Genus Mytilella Leonardi, 1903
- Genus Mytillicoccus Amerling, 1858
- Genus Mytilococcus Amerling, 1858
- Genus Mytrophila
- Genus Myzaegirus Amyot, 1847
- Genus Namaquea Munting, 1969
- Genus Namibia Munting, 1969
- Genus Nanhaiaspis Takagi & Martin, 2010
- Genus Nanmuapsis
- Genus Narayanaspis Takagi, 1985
- Genus Narayansaspis
- Genus Natalaspis Macgillivray, 1921
- Genus Neglectaspis
- Genus Nelaspis Hall, 1946
- Genus Neochionaspis Borkhsenius, 1947
- Genus Neoclavaspis Brimblecombe, 1959
- Genus Neofurcaspis Green, 1926
- Genus Neoischnaspis Pinto da Fonseca, 1970
- Genus Neoleonardia Macgillivray, 1921
- Genus Neoleucaspis Green, 1926
- Genus Neomorgania Macgillivray, 1921
- Genus Neoparlaspis Hempel, 1934
- Genus Neoparlatoria Takahashi, 1931
- Genus Neopinnaspis McKenzie, 1949
- Genus Neoprimaspis Meng & Xing, 2022
- Genus Neopseudoparlatoria González, 2016
- Genus Neoquernaspis Howell & Takagi, 1981
- Genus Neoselenaspidus Mamet, 1958
- Genus Neosignoretia Macgillivray, 1921
- Genus Neparla Takagi, 1987
- Genus Nicholiella Ferris, 1941
- Genus Nigridiaspis Ferris, 1941
- Genus Nikkoaspis Kuwana, 1928
- Genus Nilotaspis Ferris, 1941
- Genus Nimbaspis Balachowsky, 1952
- Genus Niveaspis MacGillivray, 1921
- Genus Normarkicoccus Vea & Grimaldi, 2015 †
- Genus Notandaspis Williams & Brookes, 1995
- Genus Nuculaspis Ferris, 1938
- Genus Nudachaspis Macgillivray, 1921
- Genus Obluctaspis Macgillivray, 1921
- Genus Obtuaspis
- Genus Obtusaspis Macgillivray, 1921
- Genus Oceanaspidiotus Takagi, 1984
- Genus Octaspidiotus Macgillivray, 1921
- Genus Octaspieiotus
- Genus Odonaspis Leonardi, 1897
- Genus Operculaspis Laing, 1925
- Genus Opuntiaspis Cockerell, 1898
- Genus Osiraspis Hall, 1923
- Genus Palaeomytilus Borkhsenius, 1978
- Genus Palauaspis Beardsley, 1966
- Genus Paleomytilus
- Genus Palinaspis Ferris, 1941
- Genus Pallulaspis Ferris, 1937
- Genus Pandanaspis Mamet, 1967
- Genus Parachionaspis Macgillivray, 1921
- Genus Paracupidaspis Howell & Tippins, 1981
- Genus Paradiaspis Lahille, 1919
- Genus Paraepidiaspis Balachowsky, 1954
- Genus Parafiorinia Macgillivray, 1921
- Genus Paragadaspis Kaussari & Balachowsky, 1954
- Genus Parainsulaspis Borkhsenius, 1963
- Genus Paralepidosaphes Borkhsenius, 1962
- Genus Paraleucaspis Mamet, 1954
- Genus Paraltorea
- Genus Paraltoria
- Genus Parandaspis Mamet, 1967
- Genus Parandaspis Balachowsky, 1968 accepted as Saotomaspis Balachowsky, 1973
- Genus Paranewsteadia Macgillivray, 1921
- Genus Paraonidea
- Genus Paraonidia Macgillivray, 1921
- Genus Paraonidiella Macgillivray, 1921
- Genus Parapandanaspis Mamet, 1967
- Genus Paraparlagena Mamet, 1960
- Genus Parapudaspis Borkhsenius, 1964
- Genus Pararaoaspis Borchsenius, 1967
- Genus Paraselenaspidus Mamet, 1958
- Genus Paraspidiotus Thiem & Gerneck, 1934
- Genus Parfiorinia MacGillivray, 1921
- Genus Parischnaspis Macgillivray, 1921
- Genus Parlagena McKenzie, 1945
- Genus Parlaspis McKenzie, 1945
- Genus Parlatorea Lindinger, 1905 accepted as Parlatoria Targioni-Tozzetti, 1868
- Genus Parlatoreopsis Lindinger, 1912
- Genus Parlatorepsis
- Genus Parlatoria Targioni-Tozzetti, 1868
- Genus Parrottia Macgillivray, 1921
- Genus Partargionia Macgillivray, 1921
- Genus Pelliculaspis Ferris, 1941
- Genus Pellucidaspis Henderson, 2011
- Genus Pelomphaga
- Genus Pelomphala Macgillivray, 1921
- Genus Penaspis
- Genus Pentacicola Takagi, 1993
- Genus Pentalaminaspis Smith-Pardo, Evans & Dooley, 2012
- Genus Phaspis Ben-Dov, 1974
- Genus Phaulaspis Leonardi, 1897
- Genus Phaulomytilus Leonardi, 1898
- Genus Phenacaspis Cooley & Cockerell, 1899
- Genus Phenocaspis
- Genus Pinaspis
- Genus Pinnapsis
- Genus Pinnaspis Cockerell, 1892
- Genus Pinomytilus Borkhsenius, 1963
- Genus Pistaciaspis
- Genus Poliaspidoides Goux, 1937 accepted as Mohelnaspis Šulc, 1937
- Genus Poliaspis Maskell, 1880
- Genus Poliaspoides MacGillivray, 1921 accepted as Mohelnaspis Šulc, 1937
- Genus Polyaspis Leonardi, 1898 accepted as Poliaspis Maskell, 1880
- Genus Porogymnaspis Green, 1916
- Genus Porterinaspis González, 2016 accepted as Aonidomytilus Leonardi, 1903
- Genus Pracocaspis
- Genus Praecocaspis Ferris, 1942
- Genus Primaspis Howell, 1995 accepted as Neoprimaspis Meng & Xing, 2022
- Genus Proceraspis Macgillivray, 1921
- Genus Prodiaspis Young & Wang, 1984
- Genus Prodigiaspis Ferris, 1941
- Genus Prontaspis Macgillivray, 1921
- Genus Protancepaspis Borkhsenius & Bushchik, 1959
- Genus Protargionia Leonardi, 1911
- Species Protargionia larreae Leonardi, 1911
- Species Protargionia larroae De Santis, 1941 accepted as Protargionia larreae Leonardi, 1911
- Species Protargionia salicorniae Gómez-Menor Ortega, 1928 accepted as Discodiaspis salicorniae (Gómez-Menor Ortega, 1928)
- Genus Protodiaspis Cockerell, 1898
- Genus Protomorgania Dooley & Evans, 2012
- Genus Pseudalacaspis
- Genus Pseudaonidea
- Genus Pseudaonidia Cockerell, 1897
- Genus Pseudaonidiella Macgillivray, 1921
- Genus Pseudaulacaspis Macgillivray, 1921
- Genus Pseudischnaspis Hempel, 1900
- Genus Pseudoaonidia
- Genus Pseudochionaspis Hu, 1985
- Genus Pseudodiaspis Cockerell, 1897
- Genus Pseudodiospis
- Genus Pseudodonaspis Henderson, 2011
- Genus Pseudoleucaspis Mamet, 1939
- Genus Pseudomelanaspis Borkhsenius, 1952
- Genus Pseudoparlatorea Lindinger, 1905 accepted as Pseudoparlatoria Cockerell, 1892
- Genus Pseudoparlatoria Cockerell, 1892
- Genus Pseudoselenaspidus Fonseca, 1962
- Genus Pseudotargionia Lindinger, 1912
- Genus Pudaspis
- Genus Pusillaspis Lindinger, 1906
- Genus Pygalataspis Ferris, 1921
- Genus Pygidiaspis Macgillivray, 1921
- Genus Pyrogymnaspis
- Genus Qiadraspidiotus
- Genus Quadraspidiotus Macgillivray, 1921
- Genus Quernaspis Ferris, 1937
- Genus Radiaspis Ferris, 1938 accepted as Radionaspis Ferris, 1942
- Genus Radionaspis Ferris, 1942
- Genus Ramachandraspis Prabhaker Rao, 1953
- Genus Raoaspis Borchsenius, 1967
- Genus Reclavaspis Komosinska, 1965
- Genus Relhaniaspis Munting, 1970
- Genus Remotaspidiotus Macgillivray, 1921
- Genus Remotaspiodotis Macgillivray, 1921 accepted as Remotaspidiotus Macgillivray, 1921
- Genus Remotaspis Macgillivray, 1921
- Genus Rhizaspidiotus Macgillivray, 1921
- Genus Rhopalaspis Matile-Ferrero & Foldi, 2018
- Genus Rhopaloaspis Del Guercio, 1903
- Genus Rolaspis Hall, 1946
- Genus Roonwalaspis Borchsenius, 1967
- Genus Roureaspis Takagi, 1997
- Genus Rugaspidiotinus Balachowsky, 1953
- Genus Rugaspidiotus MacGillivray, 1921
- Genus Rugaspidis
- Genus Rugpapuaspis Ben-Dov, 1991
- Genus Rungaspis Balachowsky, 1949
- Genus Rutherfordia Macgillivray, 1921
- Genus Sadaotakagia Ben-Dov, 2003
- Genus Saharaspis Balachowsky, 1951
- Genus Sakalavaspis Mamet, 1954
- Genus Sakaramyaspis Mamet, 1954
- Genus Salaspis Hall, 1946
- Genus Salicicola Lindinger, 1906
- Genus Saotomaspis Balachowsky, 1973
- Genus Sarulaspis
- Genus Sasakiaspis Kuwana, 1926
- Genus Schizaspidiotus
- Genus Schizaspis Cockerell & Robinson, 1915
- Genus Schizentaspidiotus
- Genus Schizentaspidus Mamet, 1958
- Genus Schizotargionia Balachowsky, 1951
- Genus Scleromytilus Hall, 1946
- Genus Sclopetaspis Macgillivray, 1921
- Genus Scobinaspis Macgillivray, 1921
- Genus Scrupulaspis Macgillivray, 1921
- Genus Scytalaspis Ferris, 1955
- Genus Selenaspidiotus Thiem & Gerneck, 1934 accepted as Selenaspidus Cockerell, 1897
- Genus Selenaspidopsis Nakahara, 1984
- Genus Selenaspidus Cockerell, 1897
- Genus Selenaspis Leonardi, 1898
- Genus Selenediella Mamet, 1958
- Genus Selenomphalus Mamet, 1958
- Genus Semelaspidus Macgillivray, 1921
- Genus Semichionaspis Tang, 1986
- Genus Separaspis Macgillivray, 1921
- Genus Serenaspis Henderson, 2011
- Genus Serrachionaspis Young, 1986
- Genus Serrataspis Ferris, 1955
- Genus Shansiaspis Tang, 1981
- Genus Shanxiaspis
- Genus Silvestraspis Bellio, 1929
- Genus Sinaidiaspis Bodenheimer, 1951
- Genus Sinistraspis Macgillivray, 1921
- Genus Sinoquernaspis Takagi & Tang, 1982
- Genus Sishanaspis Ferris, 1952
- Genus Situlaspis Macgillivray, 1921
- Genus Smilacicola Takagi, 1969
- Genus Spatheaspis Leonardi, 1897
- Genus Spinaspidiotus Macgillivray, 1921
- Genus Stramenaspis Ferris, 1937
- Genus Stringaspidiotus Macgillivray, 1921
- Genus Sudanaspis
- Genus Suluaspis Takagi, 2007
- Genus Superturmaspis Chen, 1983
- Genus Suturaspis Lindinger, 1911
- Genus Symeria Green, 1929
- Genus Syngenaspis Šulc, 1895
- Genus Taiwanaspidiotus Takagi, 1969
- Genus Takagia Tang, 1984
- Genus Takagina Koçak & Kemal, 2008
- Genus Takahashiaspis Takagi, 1961
- Genus Takahashiella Borkhsenius, 1964
- Genus Tamilparla Takagi, 1987
- Genus Tamuraspis Takagi, 1989
- Genus Tanaparlatoria Mamet, 1962
- Genus Targaspidiotus MacGillivray, 1921
- Genus Targionia Signoret, 1869
- Genus Targionidea MacGillivray, 1921
- Genus Targonia
- Genus Tecaspis Hall, 1946
- Genus Tegmelanaspis Chen, 1983
- Genus Tekaspis
- Genus Temnaspidiotus MacGillivray, 1921
- Genus Tenuiaspis MacGillivray, 1921
- Genus Thoa Takagi, 1993
- Genus Thymaspis Sulč, 1934
- Genus Thysanaspis Ferris, 1955
- Genus Thysanofiorinia Balachowsky, 1954
- Genus Tianquernaspis Young, 1986
- Genus Tollaspidiotus MacGillivray, 1921
- Genus Torosaspis Ülgentürk, 2011
- Genus Triaspidis MacGillivray, 1921
- Genus Triaspis accepted as Lepidosaphes Shimer, 1868
- Genus Trichomytilus Leonardi, 1898
- Genus Trigonaspis Ferris, 1941 accepted as Vinculaspis Ferris, 1942
- Genus Triraphaspis Balachowsky, 1954
- Genus Trischnaspis Ben-Dov, 1974
- Genus Troggattiella
- Genus Trullifiorinia Leonardi, 1906
- Genus Truncaspidiotus MacGillivray, 1921
- Genus Tsimanaspis Mamet, 1960
- Genus Tsimbazaspis Mamet, 1962
- Genus Tsugaspidiotus Takahashi & Takagi, 1957
- Genus Tsukushiaspis Kuwana, 1928
- Genus Tulefiorinia Mammet, 1960
- Genus Uhleria Comstock, 1883 accepted as Fiorinia Targioni-Tozzetti, 1869
- Genus Ulacaspis
- Genus Ulucoccus Takagi, Tho & Khoo, 1990
- Genus Umbaspis MacGillivray, 1921
- Genus Unachionaspis MacGillivray, 1921
- Genus Unaspidiotus MacGillivray, 1921
- Genus Unaspis MacGillivray, 1921
- Genus Ungulaspis MacGillivray, 1921
- Genus Variaspis
- Genus Varicaspis MacGillivray, 1921
- Genus Velataspis Ferris, 1937
- Genus Versiculaspis MacGillivray, 1921
- Genus Vinculaspis Ferris, 1942
- Genus Voraspis Hall, 1946
- Genus Websteriella Leonardi, 1900
- Genus Xerophilaspis Cockerell, 1897
- Genus Xeropilaspis
- Genus Xiphuraspis Borchsenius & Williams, 1963
- Genus Yomaspis
- Genus Youngus Özdikmen, 2011
- Genus Yuanaspis Young, 1986
- Genus Yunnanaspis Young, 1986
- 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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