| Acanaloniidae Amyot and Se..., 1843 | | 38 | Arten | Taxom |
| Acanthopidae Burmeister, 1838 | | 17 | Arten | Taxom |
| Acanthopteroctetidae Davis, 1978 | | 4 | Arten | Taxom |
| Acanthosomatidae Signoret, 1864 | Bauchkielwanzen | 9 | Arten | Taxom |
| Acartophthalmidae Czerny, 1928 | Augenstoppelfliegen | 3 | Arten | Taxom |
| Achilidae Stål, 1866 | Rindenzikaden | 102 | Arten | Taxom |
| Aclerdidae Ferris, 1937 | | 24 | Arten | Taxom |
| Acmaeoblattidae Durden, 1969 | | 3 | Arten | Taxom |
| Acrididae MacLeay, 1819 | Feldheuschrecken | 1332 | Arten | Taxom |
| Acroceridae Leach, 1815 | Kugelfliegen | 101 | Arten | Taxom |
| Adelgidae Heinze, 1962 | Fichtengallenläuse | 33 | Arten | Taxom |
| Adelidae Bruand, 1851 | Langfühlermotten | 52 | Arten | Taxom |
| Adeloblattidae Durden, 1969 | | 4 | Arten | Taxom |
| Adeloneuridae Carpenter, 1938 | | 1 | Art | Taxom |
| Ademosynidae Ponomarenko, 1968 | | 1 | Art | Taxom |
| Aderidae Winkler, 1927 | Baummulmkäfer | 92 | Arten | Taxom |
| Adiheterothripidae Shumsher, 1946 | | 2 | Arten | Taxom |
| Aenictopecheidae Usinger, 1932 | | 1 | Art | Taxom |
| Aeolothripidae Uzel, 1895 | | 73 | Arten | Taxom |
| Aerophasmidae Martynov, 1928 | | 1 | Art | Taxom |
| Aeshnidae Rambur, 1842 | Edellibellen | 113 | Arten | Taxom |
| Aetalionidae Spinola, 1850 | | 4 | Arten | Taxom |
| Agaonidae Walker, 1848 | Feigenwespen | 52 | Arten | Taxom |
| Agathemeridae Bradler, 2003 | | 1 | Art | Taxom |
| Agonoxenidae (Meyrick, 1926) | | 1 | Art | Taxom |
| Agromyzidae Fallen, 1823 | Minierfliegen | 1298 | Arten | Taxom |
| Agyrtidae Thomson, 1859 | Scheinaaskäfer | 22 | Arten | Taxom |
| Aididae Schaus, 1906 | | 3 | Arten | Taxom |
| Alexiidae Imhoff, 1856 | Kugelkäfer | 2 | Arten | Taxom |
| Aleyrodidae Westwood, 1840 | Mottenschildläuse Mottenläuse | 248 | Arten | Taxom |
| Alinkidae Krzemi& 324;ski, 1992 | | 1 | Art | Taxom |
| Alucitidae Leach, 1815 | Federgeistchen | 17 | Arten | Taxom |
| Alydidae Amyot & Serv..., 1843 | Krummfühlerwanzen | 67 | Arten | Taxom |
| Ambermantidae Grimaldi, 2003 | | 1 | Art | Taxom |
| Ambloblattidae Durden, 1969 | | 1 | Art | Taxom |
| Amboneuridae Carpenter, 1980 | | 1 | Art | Taxom |
| Ametropodidae Bengtsson, 1913 | | 5 | Arten | Taxom |
| Amorphoscelidae Stål, 1877 | | 2 | Arten | Taxom |
| Amphientomidae Enderlein, 1903 | | 6 | Arten | Taxom |
| Amphipsocidae Mockford, 1978 | | 3 | Arten | Taxom |
| Amphipterygidae Selys, 1853 | | 4 | Arten | Taxom |
| Amphizoidae LeConte, 1853 | Forellenbachkäfer | 3 | Arten | Taxom |
| Ampulicidae Shuckard, 1840 | Schaben-Grabwespen | 10 | Arten | Taxom |
| Anaxyelidae Martynov, 1925 | | 2 | Arten | Taxom |
| Ancopteridae Kukalova-Peck, 1975 | | 1 | Art | Taxom |
| Andrenidae Webster, 1913 | Erdbienen | 1577 | Arten | Taxom |
| Anelcanidae Carpenter, 1986 | | 2 | Arten | Taxom |
| Angarosphecidae Rasnitsyn, 1975 | | 1 | Art | Taxom |
| Anisembiidae Davis, 1940 | | 44 | Arten | Taxom |
| Anisolabididae Verhoeff, 1902 | | 8 | Arten | Taxom |
| Anisopodidae Knab, 1912 | Fenstermücken | 25 | Arten | Taxom |
| Anomalogrammatidae Carpenter, 1943 | | 1 | Art | Taxom |
| Anomalopsychidae Flint, 1981 | | 1 | Art | Taxom |
| Anormochoristidae Tillyard, 1926 | | 1 | Art | Taxom |
| Anostostomatidae Saussure, 1859 | | 25 | Arten | Taxom |
| Antemylacridae Durden, 1972 | | 1 | Art | Taxom |
| Anthelidae Turner, 1904 | | 4 | Arten | Taxom |
| Anthicidae Latreille, 1819 | Blumenkäfer | 477 | Arten | Taxom |
| Anthocoridae Fieber, 1837 | Blumenwanzen | 140 | Arten | Taxom |
| Anthomyiidae Robineau-Des..., 1830 | Blumenfliegen | 1020 | Arten | Taxom |
| Anthomyzidae Czerny, 1903 | Einmieterfliegen | 44 | Arten | Taxom |
| Anthophoridae (C. L. Koch, 1846) | Pelzbienen | 9 | Arten | Taxom |
| Anthracoblattinidae Durden, 1969 | | 9 | Arten | Taxom |
| Anthracoptilidae Handlirsch, 1922 | | 1 | Art | Taxom |
| Anthracothremmidae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Anthribidae Billberg, 1820 | Breitrüßler | 309 | Arten | Taxom |
| Apataniidae Wallengren, 1886 | | 36 | Arten | Taxom |
| Apatelodidae Neumoegen & ..., 1894 | | 2 | Arten | Taxom |
| Aphalaridae Löw, 1879 | | 122 | Arten | Taxom |
| Aphelinidae Thomson, 1876 | | 297 | Arten | Taxom |
| Apheloneuridae Carpenter, 1976 | | 2 | Arten | Taxom |
| Aphididae Latreille, 1802 | Blattläuse | 1966 | Arten | Taxom |
| Aphodiidae Leach, 1815 | Dungkäfer | 4 | Arten | Taxom |
| Aphrophoridae Evans, 1946 | Schaumzikaden | 69 | Arten | Taxom |
| Apidae Latreille, 1802 | Bienen | 2137 | Arten | Taxom |
| Apioceridae Bigot, 1852 | | 110 | Arten | Taxom |
| Apithanidae Handlirsch, 1911 | | 1 | Art | Taxom |
| Apsidoneuridae Carpenter, 1961 | | 1 | Art | Taxom |
| Aradidae Spinola, 1837 | Rindenwanzen | 168 | Arten | Taxom |
| Archaeolepiidae Whalley, 1985 | | 1 | Art | Taxom |
| Archegocimicidae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Archembiidae Ross, 2001 | | 6 | Arten | Taxom |
| Archeocrypticidae Kaszab, 1964 | | 5 | Arten | Taxom |
| Archescytinidae Tillyard, 1926 | | 14 | Arten | Taxom |
| Archilimoniidae Krzeminski &..., 2003 | | 1 | Art | Taxom |
| Archimylacridae Handlirsch, 1906 | | 88 | Arten | Taxom |
| Archipsocidae Enderlein, 1903 | | 19 | Arten | Taxom |
| Archizelmiridae Rohdendorf, 1962 | | 1 | Art | Taxom |
| Archoblattinidae (Schneider, 1983) | | 1 | Art | Taxom |
| Archotermopsidae Engel, Grima..., 2009 | | 1 | Art | Taxom |
| Arctiidae Leach, 1815 | Bären | 108 | Arten | Taxom |
| Argidae Konow, 1890 | Bürstenhornblattwespen | 130 | Arten | Taxom |
| Artematopodidae Lacordaire, 1857 | | 14 | Arten | Taxom |
| Artheneidae Stål, 1872 | | 2 | Arten | Taxom |
| Arthropleidae Balthasar, 1937 | | 1 | Art | Taxom |
| Ascalaphidae Rambur, 1842 | Schmetterlingshafte | 32 | Arten | Taxom |
| Aschiphasmatidae Brunner von ..., 1893 | | 3 | Arten | Taxom |
| Asienthomidae (Martynov, 1926) | | 0 | Arten | Taxom |
| Asilidae Latreille, 1802 | Jagdfliegen | 2099 | Arten | Taxom |
| Asiopsocidae Mockford & G..., 1976 | | 3 | Arten | Taxom |
| Asteiidae Rondani, 1856 | Feinfliegen | 40 | Arten | Taxom |
| Asterolecaniidae Cockerell, 1896 | Pockenläuse | 44 | Arten | Taxom |
| Asthenohymenidae Tillyard, 1924 | | 14 | Arten | Taxom |
| Atelestidae Hennig, 1970 | Zwergtanzfliegen | 10 | Arten | Taxom |
| Athericidae Stuckenberg, 1973 | Ibisfliegen | 13 | Arten | Taxom |
| Attelabidae Billberg, 1820 | Blattroller | 454 | Arten | Taxom |
| Aulacidae Shuckard, 1842 | | 51 | Arten | Taxom |
| Aulacigastridae Wollaston, 1864 | Baumsaftfliegen | 4 | Arten | Taxom |
| Aulertupidae Zessin & Bra..., 2010 | | 1 | Art | Taxom |
| Australiphemeridae McCafferty, 1991 | | 1 | Art | Taxom |
| Austroleptidae Nagatomi, 1982 | | 1 | Art | Taxom |
| Autostichidae Le Marchand, 1947 | Zwergpalpenmotten | 36 | Arten | Taxom |
| Awesomidae | | 1 | Art | Taxom |
| Axymyiidae Rohdendorf, 1946 | | 2 | Arten | Taxom |
| Bacillidae Brunner von ..., 1893 | | 1 | Art | Taxom |
| Bacunculidae (Brunner, 1893) | | 1 | Art | Taxom |
| Baetidae Leach, 1815 | Glashafte | 288 | Arten | Taxom |
| Baetiscidae Banks, 1900 | | 14 | Arten | Taxom |
| Baissidae Rasnitsyn, 1975 | | 1 | Art | Taxom |
| Bardohymenidae Zalessky, 1937 | | 3 | Arten | Taxom |
| Batrachedridae Heinemann & ..., 1876 | | 51 | Arten | Taxom |
| Behningiidae Motas & Bacesco, 1937 | | 1 | Art | Taxom |
| Belidae Schönherr, 1826 | | 57 | Arten | Taxom |
| Belostomatidae Leach, 1815 | Riesenwanzen | 59 | Arten | Taxom |
| Beraeidae Wallengren, 1891 | | 6 | Arten | Taxom |
| Berothidae Handlirsch, 1906 | | 18 | Arten | Taxom |
| Berytidae Fieber, 1851 | Keulenwanzen | 33 | Arten | Taxom |
| Bethylidae Halliday, 1839 | Plattwespen | 327 | Arten | Taxom |
| Biarmohymenidae Zalessky, 1937 | | 1 | Art | Taxom |
| Bibionidae Fleming, 1821 | Haarmücken | 223 | Arten | Taxom |
| Bintoniellidae Handlirsch, 1937 | | 0 | Arten | Taxom |
| Biphyllidae LeConte, 1861 | Buchenpilzkäfer | 4 | Arten | Taxom |
| Bittacidae Handlirsch, 1906 | Mückenhafte | 23 | Arten | Taxom |
| Blaberidae Saussure, 1864 | | 78 | Arten | Taxom |
| Blasticotomidae Thomson, 1871 | | 2 | Arten | Taxom |
| Blastobasidae (Meyrick, 1894) | | 16 | Arten | Taxom |
| Blattellidae (Karny, 1908) | Kleinschaben | 80 | Arten | Taxom |
| Blattidae Stephens, 1829 | Schaben | 37 | Arten | Taxom |
| Blattinopsidae Bolton, 1925 | | 12 | Arten | Taxom |
| Blattulidae Vishnyokova, 1982 | | 3 | Arten | Taxom |
| Blephariceridae Loew, 1861 | Lidmücken | 49 | Arten | Taxom |
| Blissidae Stål, 1862 | Schmalwanzen | 56 | Arten | Taxom |
| Bohartillidae Kinzelbach, 1969 | | 1 | Art | Taxom |
| Bolboceratidae (Mulsant, 1842) | | 3 | Arten | Taxom |
| Bombycidae Latreille, 1802 | Echte Spinner | 90 | Arten | Taxom |
| Bombyliidae Latreille, 1802 | Hummelfliegen | 1929 | Arten | Taxom |
| Boopiidae Mjöberg, 1910 | | 2 | Arten | Taxom |
| Boreidae Latreille, 1816 | Winterhafte | 17 | Arten | Taxom |
| Boridae C. G. Thomson, 1859 | Urkäfer | 2 | Arten | Taxom |
| Bostrichidae Latreille, 1802 | Bohrkäfer | 260 | Arten | Taxom |
| Bothrideridae Erichson, 1845 | Blindkäfer | 19 | Arten | Taxom |
| Brachodidae Agenjo, 1966 | | 4 | Arten | Taxom |
| Brachonidae | | 1 | Art | Taxom |
| Brachycentridae Ulmer, 1903 | | 25 | Arten | Taxom |
| Brachyceridae (Billberg, 1820) | | 1 | Art | Taxom |
| Brachypsectridae LeConte & Horn, 1883 | | 1 | Art | Taxom |
| Brachypteridae (Erichson, 1845) | | 22 | Arten | Taxom |
| Brachystomatidae Melander, 1908 | | 6 | Arten | Taxom |
| Braconidae Latreille, 1829 | Brackwespen | 3853 | Arten | Taxom |
| Bradyblattidae Durden, 1969 | | 64 | Arten | Taxom |
| Bradynobaenidae Saussure, 1892 | | 51 | Arten | Taxom |
| Braulidae Egger, 1853 | Bienenläuse | 1 | Art | Taxom |
| Brentidae Billberg, 1820 | Langkäfer | 423 | Arten | Taxom |
| Breyeriidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Brodiidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Brodiopteridae Carpenter, 1963 | | 3 | Arten | Taxom |
| Brongniartiellidae Martynova, 1949 | | 1 | Art | Taxom |
| Buprestidae Leach, 1815 | Prachtkäfer | 1708 | Arten | Taxom |
| Byrrhidae Latreille, 1804 | Pillenkäfer | 120 | Arten | Taxom |
| Byturidae Jacquelin du..., 1858 | Blütenfresser | 11 | Arten | Taxom |
| Cacurgidae Handlirsch, 1911 | | 3 | Arten | Taxom |
| Caeciliusidae Kolbe, 1880 | | 82 | Arten | Taxom |
| Caenidae Newman, 1853 | | 57 | Arten | Taxom |
| Calamoceratidae Ulmer, 1905 | | 14 | Arten | Taxom |
| Caliscelidae Amyot & Serv..., 1843 | Walzenzikaden | 64 | Arten | Taxom |
| Callaphididae (Borner, 1952) | Zierläuse | 9 | Arten | Taxom |
| Callidulidae Moore, 1877 | | 1 | Art | Taxom |
| Calliphoridae Brauer & Ber..., 1889 | Schmeißfliegen | 285 | Arten | Taxom |
| Callirhipidae Emden, 1924 | | 12 | Arten | Taxom |
| Calocidae Ross, 1967 | | 2 | Arten | Taxom |
| Caloneuridae Handlirsch, 1906 | | 6 | Arten | Taxom |
| Calophyidae Vondracek, 1957 | | 17 | Arten | Taxom |
| Calopterygidae Selys, 1850 | Prachtlibellen | 26 | Arten | Taxom |
| Calvertiellidae Martynov, 1931 | | 4 | Arten | Taxom |
| Camillidae Frey, 1921 | Nagetierfliegen | 7 | Arten | Taxom |
| Campterophlebiidae Handlirsch, 1920 | | 1 | Art | Taxom |
| Camptotaxineuridae Tillyard, 1937 | | 1 | Art | Taxom |
| Canaceidae (Jones, 1906) | | 33 | Arten | Taxom |
| Canacidae Jones, 1906 | Dünenfliegen | 1 | Art | Taxom |
| Canadaphididae Richards, 1966 | | 1 | Art | Taxom |
| Cantharidae Imhoff, 1856 | Franzosen | 744 | Arten | Taxom |
| Canthyloscelidae Enderlein, 1912 | | 5 | Arten | Taxom |
| Capniidae Klapálek, 1905 | | 204 | Arten | Taxom |
| Carabidae Latreille, 1802 | Laufkäfer | 6023 | Arten | Taxom |
| Carcinophoridae Hincks, 1954 | | 14 | Arten | Taxom |
| Caridae Thompson, 1992 | | 1 | Art | Taxom |
| Carnidae Newman, 1834 | Gefiederfliegen | 26 | Arten | Taxom |
| Carposinidae Walsingham, 1907 | Fruchtwickler | 31 | Arten | Taxom |
| Carsidaridae Crawford, 1911 | | 6 | Arten | Taxom |
| Castniidae Boisduval, 1828 | | 27 | Arten | Taxom |
| Cecidomyiidae Newman, 1834 | Gallmücken | 1626 | Arten | Taxom |
| Cephidae Newman, 1834 | Halmwespen | 22 | Arten | Taxom |
| Cerambycidae Latreille, 1802 | Böcke | 4127 | Arten | Taxom |
| Ceraphronidae Haliday, 1833 | | 65 | Arten | Taxom |
| Ceratocombidae Fieber, 1861 | | 9 | Arten | Taxom |
| Ceratophyllidae Dampf, 1908 | | 273 | Arten | Taxom |
| Ceratopogonidae Newman, 1834 | Gnitzen | 963 | Arten | Taxom |
| Cercopidae Leach, 1815 | Blutzikaden | 93 | Arten | Taxom |
| Cerococcidae Balachowsky, 1942 | | 9 | Arten | Taxom |
| Cerophytidae Latreille, 1834 | Dornhalskäfer | 5 | Arten | Taxom |
| Cerylonidae Billberg, 1820 | Glattrindenkäfer | 57 | Arten | Taxom |
| Cetoniidae (Leach, 1815) | Rosenkäfer | 1 | Art | Taxom |
| Chalcididae Latreille, 1817 | Erzwespen | 307 | Arten | Taxom |
| Chamaemyiidae Hendel, 1910 | Blattlausfliegen | 96 | Arten | Taxom |
| Chaoboridae Newman, 1834 | Büschelmücken | 46 | Arten | Taxom |
| Cheliphlebidae Handlirsch, 1911 | | 4 | Arten | Taxom |
| Chelisochidae Burr, 1907 | | 3 | Arten | Taxom |
| Chelonariidae Blanchard, 1845 | | 11 | Arten | Taxom |
| Chimabachidae (HEINEMANN, 1870) | Laubholzmotten | 1 | Art | Taxom |
| Chironomidae Erichson, 1842 | Schwarmmücken | 1871 | Arten | Taxom |
| Chlorogomphidae Needham, 1903 | | 1 | Art | Taxom |
| Chloroperlidae Okamoto, 1912 | | 148 | Arten | Taxom |
| Chloropidae Schoenherr, 1840 | Halmfliegen | 519 | Arten | Taxom |
| Choreutidae Stainton, 1854 | Rundstirnmotten | 71 | Arten | Taxom |
| Chorotypidae Stål, 1873 | | 1 | Art | Taxom |
| Chrysididae Latreille, 1802 | Goldwespen | 359 | Arten | Taxom |
| Chrysomelidae Latreille, 1802 | Blattkäfer | 3697 | Arten | Taxom |
| Chrysopidae Schneider, 1851 | Florfliegen | 208 | Arten | Taxom |
| Chyromyidae Hendel, 1916 | Gelbfliegen | 17 | Arten | Taxom |
| Cicadellidae Latreille, 1802 | Kleinzikaden | 7321 | Arten | Taxom |
| Cicadidae Westwood, 1840 | Singzikaden | 425 | Arten | Taxom |
| Ciidae Leach, 1819 | Baumschwammfresser | 182 | Arten | Taxom |
| Cimbicidae Kirby, 1837 | Keulenhornblattwespen | 31 | Arten | Taxom |
| Cimbrophlebiidae Willmann, 1977 | | 4 | Arten | Taxom |
| Cimicidae Latreille, 1802 | Bettwanzen | 19 | Arten | Taxom |
| Cixiidae Spinola, 1839 | Glasflügelzikaden | 481 | Arten | Taxom |
| Clambidae Fischer, 1821 | Punktkäfer | 25 | Arten | Taxom |
| Clastopteridae Stål, 1858 | | 53 | Arten | Taxom |
| Cleridae Latreille, 1802 | Buntkäfer | 462 | Arten | Taxom |
| Clusiidae Schönherr, 1840 | Druidenfliegen | 73 | Arten | Taxom |
| Cnemidolestidae Handlirsch, 1906 | | 3 | Arten | Taxom |
| Cneoglossidae Champion, 1897 | | 1 | Art | Taxom |
| Cobaloblattidae Durden, 1969 | | 1 | Art | Taxom |
| Coccidae Stephens, 1829 | Napfschildläuse | 259 | Arten | Taxom |
| Coccinellidae Latreille, 1807 | Glückskäfer | 803 | Arten | Taxom |
| Coelopidae Hendel, 1910 | Tangfliegen | 7 | Arten | Taxom |
| Coenagrionidae Kirby, 1890 | Schlankjungfern | 265 | Arten | Taxom |
| Coenomyiidae (Westwood, 1840) | Stinkfliegen | 1 | Art | Taxom |
| Coleophoridae Hübner, 1825 | Futteralmotten | 1684 | Arten | Taxom |
| Colletidae Lepeletier, 1841 | Kropfbienen | 414 | Arten | Taxom |
| Compsocidae Mockford, 1967 | | 2 | Arten | Taxom |
| Conchaspididae Green, 1896 | | 5 | Arten | Taxom |
| Coniopterygidae Burmeister, 1839 | Staubhafte | 78 | Arten | Taxom |
| Conoesucidae Ross, 1967 | | 2 | Arten | Taxom |
| Conopidae Latreille, 1802 | Blasenkopffliegen | 148 | Arten | Taxom |
| Copromorphidae Meyrick, 1905 | | 6 | Arten | Taxom |
| Coptoclavidae Ponomarenko, 1961 | Ausgestorbene Familie | 1 | Art | Taxom |
| Cordulegastridae Calvert, 1893 | Quelljungfern | 19 | Arten | Taxom |
| Corduliidae Selys-Longch..., 1850 | Falkenlibellen | 83 | Arten | Taxom |
| Coreidae Leach, 1815 | Lederwanzen | 337 | Arten | Taxom |
| Corethrellidae (Wood & Borkent, 1986) | | 1 | Art | Taxom |
| Corioxenidae Kinzelbach, 1970 | | 10 | Arten | Taxom |
| Corixidae Leach, 1815 | Ruderwanzen | 191 | Arten | Taxom |
| Corydalidae Burmeister, 1839 | | 43 | Arten | Taxom |
| Corydasialidae Wichard & al., 2005 | | 1 | Art | Taxom |
| Corydiidae de Saussure, 1864 | Sandschaben | 65 | Arten | Taxom |
| Corylophidae LeConte, 1852 | Faulholzkäfer | 137 | Arten | Taxom |
| Cosmopterigidae Heinemann & ..., 1876 | Prachtfalter | 305 | Arten | Taxom |
| Cosmopterygidae (Heinemann & ..., 1876) | | 0 | Arten | Taxom |
| Cossidae Leach, 1815 | Bohrer | 183 | Arten | Taxom |
| Crabronidae Latreille, 1802 | Grabwespen | 1606 | Arten | Taxom |
| Crambidae Latreille, 1810 | Graszünsler | 2212 | Arten | Taxom |
| Cretamyzidae Heie, 1992 | | 1 | Art | Taxom |
| Crosaphididae Kovalev, 1983 | | 1 | Art | Taxom |
| Cryptocercidae Handlirsch, 1925 | | 5 | Arten | Taxom |
| Cryptochetidae Brues & Mela..., 1932 | | 1 | Art | Taxom |
| Cryptococcidae | | 3 | Arten | Taxom |
| Cryptophagidae Kirby, 1937 | Schimmelkäfer | 307 | Arten | Taxom |
| Ctenophthalmidae Rothschild, 1915 | | 130 | Arten | Taxom |
| Ctenuchidae (W. Kirby, 1837) | Widderbären | 2 | Arten | Taxom |
| Cucujidae Latreille, 1802 | Plattkäfer | 176 | Arten | Taxom |
| Culicidae Meigen, 1818 | Stechmücken | 518 | Arten | Taxom |
| Cupedidae Laporte, 1836 | | 17 | Arten | Taxom |
| Curaliidae Schuh, Weira..., 2008 | | 1 | Art | Taxom |
| Curculionidae Latreille, 1802 | Rüsselkäfer | 9519 | Arten | Taxom |
| Curtonotidae Duda, 1934 | | 7 | Arten | Taxom |
| Cybocelphalidae | | 1 | Art | Taxom |
| Cydnidae Billberg, 1820 | Erdwanzen | 114 | Arten | Taxom |
| Cylindrotomidae (Mulsant, 1842) | Moosmücken | 4 | Arten | Taxom |
| Cymidae Baerensprung, 1860 | | 21 | Arten | Taxom |
| Cynipidae Latreille, 1802 | Echte Gallwespen | 952 | Arten | Taxom |
| Cypselosomatidae Hennig, 1958 | | 3 | Arten | Taxom |
| Dactylopiidae Signoret, 1875 | | 13 | Arten | Taxom |
| Dalceridae Dyar, 1898 | | 10 | Arten | Taxom |
| Danaidae (Boisduval, 1833) | | 1 | Art | Taxom |
| Dascillidae Guérin-Ménev..., 1843 | Moorweichkäfer | 10 | Arten | Taxom |
| Dasydemellidae | | 3 | Arten | Taxom |
| Dasyleptidae Sharov, 1957 | | 4 | Arten | Taxom |
| Delopteridae Sellards, 1909 | | 1 | Art | Taxom |
| Delphacidae Leach, 1815 | Spornzikaden | 722 | Arten | Taxom |
| Demopteridae Carpenter, 1950 | | 1 | Art | Taxom |
| Depressariidae Meyrick, 1883 | Flachleibmotten | 4 | Arten | Taxom |
| Derbidae Spinola, 1839 | | 181 | Arten | Taxom |
| Dericorythidae Jacobson & B..., 1902 | | 1 | Art | Taxom |
| Dermestidae Hope, 1840 | Pelzkäfer | 322 | Arten | Taxom |
| Dermopteridae | | 1 | Art | Taxom |
| Derodontidae LeConte, 1861 | Knopfkäfer | 11 | Arten | Taxom |
| Deuterophlebiidae Edwards, 1922 | Bergmücken | 6 | Arten | Taxom |
| Diaphanopteridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Diapheromeridae Rehn & Hebard, 1909 | | 78 | Arten | Taxom |
| Diapriidae Latreille, 1796 | | 429 | Arten | Taxom |
| Diaspididae Maskell, 1878 | Austernschildläuse | 660 | Arten | Taxom |
| Diastatidae Hendel, 1917 | Laubstreufliegen | 10 | Arten | Taxom |
| Dictyoneuridae Handlirsch, 1906 | | 0 | Arten | Taxom |
| Dictyopharidae Spinola, 1839 | Laternenträger | 114 | Arten | Taxom |
| Dilaridae Newman, 1853 | | 3 | Arten | Taxom |
| Dinidoridae Stål, 1867 | | 1 | Art | Taxom |
| Dinoblattidae Durden, 1969 | | 3 | Arten | Taxom |
| Dinopanorpidae Carpenter, 1972 | | 6 | Arten | Taxom |
| Diopsidae Billberg, 1820 | Stielaugenfliegen | 3 | Arten | Taxom |
| Dioptidae (J. Bechyné, 1950) | | 1 | Art | Taxom |
| Diphyllostomatidae Holloway, 1972 | | 4 | Arten | Taxom |
| Diplatyidae (Verhoeff, 1902) | | 3 | Arten | Taxom |
| Diprionidae Rohwer, 1911 | Buschhornblattwespen | 61 | Arten | Taxom |
| Dipseudopsidae Ulmer, 1904 | | 11 | Arten | Taxom |
| Dipsocoridae Dohrn, 1859 | | 3 | Arten | Taxom |
| Dipteromantispidae Makarkin & al., 2013 | | 2 | Arten | Taxom |
| Discolomatidae Horn, 1878 | | 5 | Arten | Taxom |
| Ditaxineuridae Tillyard, 1926 | | 2 | Arten | Taxom |
| Ditomyiidae Keilin, 1919 | | 18 | Arten | Taxom |
| Dixidae Schiner, 1868 | Doppeladermücken | 74 | Arten | Taxom |
| Dolabellopsocidae Eertmoed, 1973 | | 1 | Art | Taxom |
| Dolichopodidae Latreille, 1809 | Langbeinfliegen | 2218 | Arten | Taxom |
| Douglasiidae Heinemann & ..., 1876 | Wippflügelfalter | 17 | Arten | Taxom |
| Drepanidae Meyrick, 1895 | Eulenspinner | 49 | Arten | Taxom |
| Drosophilidae Rondani, 1856 | Essigfliegen | 896 | Arten | Taxom |
| Dryinidae Haliday, 1840 | Zikadenwespen | 172 | Arten | Taxom |
| Dryomyzidae Schiner, 1862 | Baumfliegen | 27 | Arten | Taxom |
| Dryophthoridae (Schönherr, 1825) | | 5 | Arten | Taxom |
| Dryopidae Billberg, 1820 | Hakenkäfer | 53 | Arten | Taxom |
| Dytiscidae Leach, 1815 | Echte Schwimmkäfer | 1182 | Arten | Taxom |
| Echinophthiriidae Enderlein, 1904 | | 6 | Arten | Taxom |
| Ecnomidae Ulmer, 1903 | | 12 | Arten | Taxom |
| Ectobiidae (Brunner von ..., 1865) | Waldschaben | 20 | Arten | Taxom |
| Ectopsocidae | | 36 | Arten | Taxom |
| Elachistidae Bruand, 1851 | Grasminierfalter | 686 | Arten | Taxom |
| Elateridae Leach, 1815 | Larven: Echte Drahtwürmer | 2035 | Arten | Taxom |
| Elcanidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Electralbertidae Botosaneanu ..., 1983 | | 1 | Art | Taxom |
| Electrentomidae Enderlein, 1911 | | 3 | Arten | Taxom |
| Electrococcidae Koteja, 2000 | | 3 | Arten | Taxom |
| Elenchidae Perkins, 1905 | | 8 | Arten | Taxom |
| Elipsocidae Pearman, 1936 | | 25 | Arten | Taxom |
| Ellinaphididae Kania & Wegi..., 2008 | | 2 | Arten | Taxom |
| Elmidae Curtis, 1830 | Hakenkäfer | 249 | Arten | Taxom |
| Elmoboriidae Carpenter, 1977 | | 1 | Art | Taxom |
| Elmoidae Tillyard, 1937 | | 1 | Art | Taxom |
| Elytroneuridae Carpenter, 1933 | | 1 | Art | Taxom |
| Embiidae Burmeister, 1839 | | 3 | Arten | Taxom |
| Embolemidae Förster, 1856 | Widderkopfwespen | 2 | Arten | Taxom |
| Empheriidae Enderlein, 1906 | | 1 | Art | Taxom |
| Empididae Latreille, 1809 | Tanzfliegen | 851 | Arten | Taxom |
| Encyrtidae Walker, 1837 | | 808 | Arten | Taxom |
| Enderleinellidae Ewing, 1929 | | 17 | Arten | Taxom |
| Endomychidae Leach, 1815 | Stäublingskäfer | 136 | Arten | Taxom |
| Eneopteridae (Saussure, 1893) | | 32 | Arten | Taxom |
| Enicocephalidae Stål, 1860 | | 24 | Arten | Taxom |
| Eoblattidae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Eomeropidae Cockerell, 1909 | | 2 | Arten | Taxom |
| Eophlebomyiidae Cockerell, 1925 | | 1 | Art | Taxom |
| Eorpidae Archibald & al., 2013 | | 3 | Arten | Taxom |
| Epallagidae Needham, 1903 | | 4 | Arten | Taxom |
| Epermeniidae Spuler, 1910 | Zahnflügelfalter | 171 | Arten | Taxom |
| Ephemerellidae (Klapálek, 1909) | | 127 | Arten | Taxom |
| Ephemeridae Leach, 1817 | Eintagsfliegen | 31 | Arten | Taxom |
| Ephydridae Zetterstedt, 1837 | Salzfliegen | 702 | Arten | Taxom |
| Epideigmatidae Handlirsch, 1911 | | 1 | Art | Taxom |
| Epipsocidae | | 4 | Arten | Taxom |
| Epipygidae Hamilton, 2001 | | 1 | Art | Taxom |
| Epipyropidae Dyar, 1903 | | 3 | Arten | Taxom |
| Episactidae Burr, 1899 | | 12 | Arten | Taxom |
| Erebidae Leach, 1815 | | 3445 | Arten | Taxom |
| Eriococcidae Cockerell, 1899 | Wollschildläuse | 195 | Arten | Taxom |
| Eriocottidae Spuler, 1898 | | 1 | Art | Taxom |
| Eriocraniidae Rebel, 1901 | Trugfalter | 17 | Arten | Taxom |
| Erotylidae Latreille, 1802 | Faulholzkäfer | 171 | Arten | Taxom |
| Eubleptidae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Eucaenidae Handlirsch, 1906 | | 5 | Arten | Taxom |
| Eucharitidae Latreille, 1809 | | 56 | Arten | Taxom |
| Eucinetidae Lacordaire, 1857 | Purzelkäfer | 20 | Arten | Taxom |
| Eucnemidae Eschscholtz, 1829 | Kammkäfer | 118 | Arten | Taxom |
| Eucoilidae (Thomson, 1862) | | 1 | Art | Taxom |
| Eugereonidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Eulichadidae Crowson, 1973 | | 2 | Arten | Taxom |
| Eulophidae Westwood, 1829 | Erzwespen | 1439 | Arten | Taxom |
| Eumastacidae Burr, 1898 | | 24 | Arten | Taxom |
| Eupelmidae Walker, 1833 | | 180 | Arten | Taxom |
| Eupterotidae Swinhoe, 1892 | | 2 | Arten | Taxom |
| Eurybrachidae Stål, 1862 | | 2 | Arten | Taxom |
| Eurytomidae Walker, 1832 | | 453 | Arten | Taxom |
| Euteliidae Grote, 1882 | | 51 | Arten | Taxom |
| Euthyplociidae Lestage, 1921 | | 2 | Arten | Taxom |
| Evaniidae Latreille, 1802 | Hungerwespen | 28 | Arten | Taxom |
| Fanniidae Schnabl & Dz..., 1911 | | 138 | Arten | Taxom |
| Fauriellidae Priesner, 1949 | | 1 | Art | Taxom |
| Fergusoninidae Hennig, 1958 | | 3 | Arten | Taxom |
| Figitidae Thomson, 1862 | | 276 | Arten | Taxom |
| Flatidae Spinola, 1839 | Schmetterlingszikaden | 101 | Arten | Taxom |
| Forficulidae Stephens, 1829 | Eigentliche Ohrwürmer | 32 | Arten | Taxom |
| Formicidae Latreille, 1809 | Ameisen | 2795 | Arten | Taxom |
| Fouqueidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Fulgoridae Latreille, 1807 | Leuchtzirpen | 75 | Arten | Taxom |
| Galacticidae Minet, 1986 | | 2 | Arten | Taxom |
| Galgulidae | | 1 | Art | Taxom |
| Gasteruptiidae Ashmead, 1900 | Gichtwespen | 23 | Arten | Taxom |
| Gelasopteridae Carpenter, 1976 | | 1 | Art | Taxom |
| Gelastocoridae Kirkaldy, 1897 | | 13 | Arten | Taxom |
| Gelechiidae Stainton, 1854 | Palpenfalter | 1655 | Arten | Taxom |
| Geocoridae Baerensprung, 1860 | | 45 | Arten | Taxom |
| Geometridae Leach, 1815 | Spanner | 3819 | Arten | Taxom |
| Georyssidae Laporte, 1819 | | 2 | Arten | Taxom |
| Geotrupidae Latreille, 1802 | Blatthornkäfer | 166 | Arten | Taxom |
| Gerapompidae Handlirsch, 1906 | | 4 | Arten | Taxom |
| Geraridae Scudder, 1885 | | 11 | Arten | Taxom |
| Gerridae Leach, 1815 | Schneider | 97 | Arten | Taxom |
| Glaphyridae MacLeay, 1819 | | 15 | Arten | Taxom |
| Glaphyropteridae Pongracz, 1935 | | 1 | Art | Taxom |
| Glaresidae Kolbe, 1905 | | 33 | Arten | Taxom |
| Glossinidae Theobald, 1903 | Tsetsefliegen | 7 | Arten | Taxom |
| Glossosomatidae Wallengren, 1891 | | 169 | Arten | Taxom |
| Glyphipterigidae Stainton, 1854 | Halbmotten | 64 | Arten | Taxom |
| Goeridae Ulmer, 1903 | | 18 | Arten | Taxom |
| Gomphaeschnidae Tillyard & F..., 1940 | | 1 | Art | Taxom |
| Gomphidae Rambur, 1842 | Flußjungfern | 231 | Arten | Taxom |
| Gracillariidae Stainton, 1854 | Blatttütenfalter | 565 | Arten | Taxom |
| Grassyaphididae Heie, 2000 | | 1 | Art | Taxom |
| Grimaldiellidae Koteja, 2000 | | 2 | Arten | Taxom |
| Gripopterygidae Enderlein, 1909 | | 2 | Arten | Taxom |
| Gryllacrididae Blanchard, 1845 | | 13 | Arten | Taxom |
| Gryllidae Bolivar, 1878 | Grillen | 85 | Arten | Taxom |
| Grylloblattidae E. M. Walker, 1914 | Grillenschaben | 16 | Arten | Taxom |
| Gryllotalpidae Saussure, 1870 | Maulwurfsgrillen | 26 | Arten | Taxom |
| Gyrinidae Latreille, 1802 | Drehkäfer | 108 | Arten | Taxom |
| Gyroblattidae Durden, 1969 | | 6 | Arten | Taxom |
| Gyropidae Kellogg, 1896 | | 7 | Arten | Taxom |
| Hadentomidae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Haematopinidae Enderlein, 1904 | Tierläuse | 13 | Arten | Taxom |
| Haglidae Handlirsch, 1906 | | 5 | Arten | Taxom |
| Halictidae Thomson, 1869 | Schmalbienen und Furchenbienen | 1303 | Arten | Taxom |
| Halictophagidae Perkins, 1905 | | 28 | Arten | Taxom |
| Halimococcidae Brown & McKe..., 1962 | | 9 | Arten | Taxom |
| Haliplidae Aubé, 1836 | Wassertreter | 102 | Arten | Taxom |
| Hanidae Kukalova-Peck, 1975 | | 1 | Art | Taxom |
| Hapalopteridae Handlirsch, 1906 | | 7 | Arten | Taxom |
| Hebridae Amyot and Se..., 1843 | Uferläufer | 25 | Arten | Taxom |
| Hedylidae Guenée, 1857 | | 9 | Arten | Taxom |
| Helcomyzidae Malloch, 1933 | Strandfliegen | 2 | Arten | Taxom |
| Heleomyzidae (Westwood, 1840) | Dunkelfliegen | 227 | Arten | Taxom |
| Heliconiidae (Swainson, 1822) | | 0 | Arten | Taxom |
| Helicopsychidae Ulmer, 1912 | | 33 | Arten | Taxom |
| Heliodinidae Heinemann & ..., 1876 | Sonnenmotten | 49 | Arten | Taxom |
| Heliozelidae Heinemann & ..., 1876 | Erzglanzfalter | 52 | Arten | Taxom |
| Helophoridae (Leach, 1815) | | 1 | Art | Taxom |
| Heloridae Förster, 1856 | Florfliegenwespen | 3 | Arten | Taxom |
| Helosciomyzidae Griffiths, 1972 | | 1 | Art | Taxom |
| Helotidae Reitter, 1876 | | 3 | Arten | Taxom |
| Hemerobiidae Latreille, 1802 | Blattlauslöwen | 143 | Arten | Taxom |
| Hemimylacridae Waterlot, 1934 | | 10 | Arten | Taxom |
| Hemiphlebiidae Fraser, 1960 | | 1 | Art | Taxom |
| Hemipsocidae Pearman, 1936 | | 4 | Arten | Taxom |
| Henrotayiidae Fleck, Bechl..., 2003 | | 1 | Art | Taxom |
| Hepialidae Stephens, 1829 | Wurzelbohrer | 73 | Arten | Taxom |
| Heptageniidae Needham, 1901 | Aderhafte | 228 | Arten | Taxom |
| Herdinidae Carpenter & ..., 1972 | | 1 | Art | Taxom |
| Hesperiidae Latreille, 1809 | Dickkopfalter | 1996 | Arten | Taxom |
| Hesperinidae Hendel, 1928 | | 1 | Art | Taxom |
| Heteroceridae MacLeay, 1825 | Sägekäfer | 94 | Arten | Taxom |
| Heterocheilidae Mcalpine, 1991 | Halbbrückenfliegen | 3 | Arten | Taxom |
| Heterogastridae Stål, 1872 | | 3 | Arten | Taxom |
| Heterogynidae Rambur, 1866 | Federwidderchen | 0 | Arten | Taxom |
| Heteromyzidae Fallen, 1820 | Scheufliegen | 2 | Arten | Taxom |
| Heteronemiidae Rehn, J. A. G., 1904 | | 10 | Arten | Taxom |
| Heteroptilidae Carpenter, 1977 | | 1 | Art | Taxom |
| Heterothripidae Bagnall, 1912 | | 29 | Arten | Taxom |
| Hilarimorphidae Hendel, 1936 | Auenfliegen | 31 | Arten | Taxom |
| Hippoboscidae Samouelle, 1819 | Lausfliegen | 120 | Arten | Taxom |
| Histeridae Gyllenhal, 1808 | Stutzkäfer | 1167 | Arten | Taxom |
| Homoiopteridae Handlirsch, 1906 | | 9 | Arten | Taxom |
| Homotomidae Heslop-Harrison, 1958 | | 5 | Arten | Taxom |
| Hoplopleuridae Ewing, 1929 | | 22 | Arten | Taxom |
| Hyblaeidae Hampson, 1903 | | 2 | Arten | Taxom |
| Hybosoridae Erichson, 1847 | | 43 | Arten | Taxom |
| Hybotidae Meigen, 1820 | Buckeltanzfliegen | 482 | Arten | Taxom |
| Hydraenidae Mulsant, 1844 | Langtaster-Wasserkäfer | 176 | Arten | Taxom |
| Hydrobiosidae Ulmer, 1905 | | 131 | Arten | Taxom |
| Hydrometridae Billberg, 1820 | Teichläufer | 20 | Arten | Taxom |
| Hydrophilidae Latreille, 1802 | Kolbenwasserkäfer | 686 | Arten | Taxom |
| Hydropsychidae Curtis, 1835 | | 242 | Arten | Taxom |
| Hydroptilidae Stephens, 1836 | | 649 | Arten | Taxom |
| Hydroscaphidae LeConte, 1874 | | 2 | Arten | Taxom |
| Hylicellidae Evans, 1956 | | 1 | Art | Taxom |
| Hymenopodidae Giglio-Tos, 1919 | | 7 | Arten | Taxom |
| Hystrichopsyllidae Tiraboschi, 1904 | | 65 | Arten | Taxom |
| Ibaliidae Thomson, 1862 | Dornwurmwespen | 11 | Arten | Taxom |
| Ichneumonidae Latreille, 1802 | Echte Schlupfwespen | 6047 | Arten | Taxom |
| Ideliidae (Zalessky, 1929) | | 1 | Art | Taxom |
| Idelinellidae Storozhenko, 1997 | | 1 | Art | Taxom |
| Idiomylacridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Idiostolidae Scudder, 1962 | | 1 | Art | Taxom |
| Immidae Heppner, 1977 | | 1 | Art | Taxom |
| Incurvariidae Spuler, 1898 | Echte Blattsackfalter | 26 | Arten | Taxom |
| Inocelliidae Navas, 1913 | | 6 | Arten | Taxom |
| Ironomyiidae McAlpine & M..., 1966 | | 1 | Art | Taxom |
| Ischnoneuridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Ischnopsyllidae Wahlgren, 1907 | Fledermausflöhe | 19 | Arten | Taxom |
| Isostictidae Fraser, 1955 | | 1 | Art | Taxom |
| Issidae Spinola, 1839 | Käferzikaden | 90 | Arten | Taxom |
| Ithonidae Newman, 1838 | | 7 | Arten | Taxom |
| Ithyceridae (Schönherr, 1826) | | 2 | Arten | Taxom |
| Jacobsoniidae Heller, 1926 | | 2 | Arten | Taxom |
| Jantarimantidae Vrsansky, 2002 | | 1 | Art | Taxom |
| Jascopidae Hamilton, 1971 | | 1 | Art | Taxom |
| Jersicoccidae Koteja, 2000 | | 3 | Arten | Taxom |
| Kalotermitidae Froggatt, 1897 | Trockenholztermiten | 54 | Arten | Taxom |
| Kateretidae Kirkby, 1837 | Riedgras-Glanzkäfer | 4 | Arten | Taxom |
| Kennedyidae Tillyard, 1925 | | 10 | Arten | Taxom |
| Kermesidae Signoret, 1875 | Eichennapfläuse | 48 | Arten | Taxom |
| Keroplatidae Rondani, 1856 | Langhornmücken | 172 | Arten | Taxom |
| Kerriidae Lindinger, 1937 | | 8 | Arten | Taxom |
| Kinnaridae Muir, 1925 | | 13 | Arten | Taxom |
| Kohlwaldiidae Guthörl, 1962 | | 1 | Art | Taxom |
| Krausichnidae Genise, 2004 | | 0 | Arten | Taxom |
| Kukaspididae Koteja & Poinar, 2001 | | 1 | Art | Taxom |
| Kuwaniidae MacGillvray, 1921 | | 3 | Arten | Taxom |
| Labiduridae Verhoeff, 1902 | | 11 | Arten | Taxom |
| Labiidae (Burr, 1909) | | 22 | Arten | Taxom |
| Labiococcidae Koteja, 2000 | | 2 | Arten | Taxom |
| Labradorocoleidae Ponomarenko, 1969 | | 1 | Art | Taxom |
| Lachesillidae Pearman, 1936 | | 169 | Arten | Taxom |
| Lacturidae Heppner, 1995 | | 9 | Arten | Taxom |
| Laemobothriidae Mjöberg, 1910 | | 12 | Arten | Taxom |
| Laemophloeidae (Ganglbauer, 1899) | Bastplattkäfer | 3 | Arten | Taxom |
| Lalacidae Hamilton, 1990 | | 1 | Art | Taxom |
| Lampyridae Latreille, 1817 | Glühwürmchen | 368 | Arten | Taxom |
| Largidae Amyot and Se..., 1843 | | 39 | Arten | Taxom |
| Lasiocampidae Harris, 1841 | Glucken | 172 | Arten | Taxom |
| Latridiidae Erichson, 1842 | Moderkäfer | 259 | Arten | Taxom |
| Lauxaniidae Macquart, 1835 | Faulfliegen | 286 | Arten | Taxom |
| Lecanodiaspididae Borchsenius, 1965 | | 14 | Arten | Taxom |
| Lecithoceridae Le Marchand, 1947 | | 7 | Arten | Taxom |
| Leiodidae Fleming, 1821 | Schwammkugelkäfer | 738 | Arten | Taxom |
| Lemmatophoridae Sellards, 1909 | | 11 | Arten | Taxom |
| Lemoniidae Hampson, 1918 | Herbstspinner | 1 | Art | Taxom |
| Lepiceridae Hinton, 1936 | | 2 | Arten | Taxom |
| Lepidopsocidae Lienhard & S..., 2002 | | 33 | Arten | Taxom |
| Lepidostomatidae Ulmer, 1903 | | 126 | Arten | Taxom |
| Lepidotrichidae Silvestri, 1912 | | 1 | Art | Taxom |
| Lepismatidae Latreille, 1802 | Borstenschwänze | 25 | Arten | Taxom |
| Leptaphelocheiridae Polhemus, 2000 | | 1 | Art | Taxom |
| Leptoceridae Leach, 1815 | | 283 | Arten | Taxom |
| Leptohyphidae Landa & Soldán, 1985 | | 59 | Arten | Taxom |
| Leptophlebiidae Banks, 1900 | | 122 | Arten | Taxom |
| Leptopodidae Amyot and Se..., 1843 | Steinläuferwanzen | 4 | Arten | Taxom |
| Leptopsyllidae Rothschild &..., 1915 | | 33 | Arten | Taxom |
| Lestidae Calvert, 1901 | Binsenjungfern | 36 | Arten | Taxom |
| Leucospidae Fabricius, 1775 | Falten-Erzwespen | 20 | Arten | Taxom |
| Leuctridae Klapálek, 1905 | | 94 | Arten | Taxom |
| Liadopsyllidae Martynov, 1927 | | 1 | Art | Taxom |
| Libellulidae Rambur, 1842 | Kurzlibellen | 253 | Arten | Taxom |
| Limacodidae Duponchel, 1845 | Asselspinner | 149 | Arten | Taxom |
| Limnephilidae Kolenati, 1848 | | 429 | Arten | Taxom |
| Limnichidae Erichson, 1846 | Uferpillenkäfer | 75 | Arten | Taxom |
| Limoniidae (Speiser, 1909) | Stelzmücken | 220 | Arten | Taxom |
| Linognathidae Webb, 1946 | | 16 | Arten | Taxom |
| Liomopteridae Sellards, 1909 | | 8 | Arten | Taxom |
| Liopteridae Ashmead, 1895 | | 14 | Arten | Taxom |
| Liposcelididae Enderlein, 1911 | Bücherläuse | 54 | Arten | Taxom |
| Lithomanteidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Lithoneuridae Sroka & al., 2014 | | 5 | Arten | Taxom |
| Lithopanorpidae Carpenter, 1930 | | 1 | Art | Taxom |
| Liturgusidae Giglio-Tos, 1919 | | 8 | Arten | Taxom |
| Liviidae Low, 1879 | | 58 | Arten | Taxom |
| Locustopsidae Handlirsch, 1906 | | 5 | Arten | Taxom |
| Lonchaeidae Loew, 1861 | Lanzenfliegen | 176 | Arten | Taxom |
| Lonchopteridae Curtis, 1839 | Lanzenfliegen | 11 | Arten | Taxom |
| Lophioneuridae Tillyard, 1921 | | 4 | Arten | Taxom |
| Lophocoronidae Common, 1973 | | 1 | Art | Taxom |
| Lucanidae Latreille, 1804 | Hirschkäfer | 115 | Arten | Taxom |
| Luiseiidae Nel & al., 2012 | | 1 | Art | Taxom |
| Lutrochidae Kasap & Crowson, 1975 | | 4 | Arten | Taxom |
| Lycaenidae Leach, 1815 | Bläulinge | 1240 | Arten | Taxom |
| Lycanidae (Leach, 1815) | Bläulinge | 1 | Art | Taxom |
| Lycidae Laporte, 1836 | Rotdeckenkäfer | 195 | Arten | Taxom |
| Lycocercidae Handlirsch, 1906 | | 4 | Arten | Taxom |
| Lygaeidae Schilling, 1829 | Bodenwanzen | 362 | Arten | Taxom |
| Lygistorrhinidae Hendel, 1936 | | 2 | Arten | Taxom |
| Lygobiidae Mitchell, 1908 | | 1 | Art | Taxom |
| Lymexylidae Fleming, 1821 | Werftkäfer | 8 | Arten | Taxom |
| Lyonetiidae Stainton, 1854 | Langhorn-Blattminierfalter | 181 | Arten | Taxom |
| Machilidae Grassi, 1888 | Felsenspringer | 39 | Arten | Taxom |
| Macroveliidae McKinstry, 1942 | | 3 | Arten | Taxom |
| Maimetshidae (Rasnitsyn, 1975) | | 3 | Arten | Taxom |
| Malcidae Stål, 1865 | | 1 | Art | Taxom |
| Mantidae Burmeister, 1838 | Fangschrecken | 89 | Arten | Taxom |
| Mantispidae Leach, 1815 | Fanghafte | 49 | Arten | Taxom |
| Mantoididae Giglio-Tos, 1927 | | 3 | Arten | Taxom |
| Marchalinidae Morrison, 1927 | | 1 | Art | Taxom |
| Margarodidae Newstead, 1901 | Höhlenschildläuse | 16 | Arten | Taxom |
| Martynoviidae Tillyard, 1932 | | 8 | Arten | Taxom |
| Mastotermitidae Desneux, 1904 | Riesentermiten | 2 | Arten | Taxom |
| Matsucoccidae Morrison, 1927 | Kiefernborkenschildläuse | 23 | Arten | Taxom |
| Mauroniscidae Majer, 1995 | | 8 | Arten | Taxom |
| Meenoplidae Fieber, 1872 | | 1 | Art | Taxom |
| Megachilidae Schenk, 1860 | Bauchsammlerbienen | 1332 | Arten | Taxom |
| Megakhosaridae Sharov, 1961 | | 2 | Arten | Taxom |
| Megalopodidae Latreille, 1802 | | 19 | Arten | Taxom |
| Megalopygidae Herrich-Schä..., 1855 | | 49 | Arten | Taxom |
| Megalyridae Schletterer, 1889 | | 1 | Art | Taxom |
| Megamerinidae Hendel, 1913 | Borkenfliegen | 1 | Art | Taxom |
| Meganeuridae Handlirsch, 1906 | | 17 | Arten | Taxom |
| Megapodagrionidae Tillyard, 1917 | | 21 | Arten | Taxom |
| Megarididae McAtee & Mal..., 1928 | | 1 | Art | Taxom |
| Megaspilidae Ashmead, 1893 | | 96 | Arten | Taxom |
| Megelytridae Carpenter, 1933 | | 1 | Art | Taxom |
| Meinertellidae Verhoeff, 1910 | | 11 | Arten | Taxom |
| Melandryidae Leach, 1815 | Düsterkäfer | 103 | Arten | Taxom |
| Melanthripidae Bagnall, 1913 | | 14 | Arten | Taxom |
| Melinophlebiidae Durden, 1969 | | 2 | Arten | Taxom |
| Melittidae Schenk, 1860 | Sägehornbienen | 49 | Arten | Taxom |
| Meloidae Gyllenhal, 1810 | Blasenkäfer | 710 | Arten | Taxom |
| Melolonthidae (Leach, 1817) | Maikäfer | 2 | Arten | Taxom |
| Melyridae Leach, 1815 | Wollhaarkäfer | 642 | Arten | Taxom |
| Membracidae Germar, 1821 | Buckelzikaden | 641 | Arten | Taxom |
| Menoponidae Mjöberg, 1910 | | 345 | Arten | Taxom |
| Meropeidae Espen-Petersen, 1921 | | 1 | Art | Taxom |
| Merothripidae Hood, 1914 | | 7 | Arten | Taxom |
| Mesoblattinidae Handlirsch, 1906 | | 3 | Arten | Taxom |
| Mesokristenseniidae Huang, Nel &..., 2010 | | 1 | Art | Taxom |
| Mesopsocidae Enderlein, 1903 | | 4 | Arten | Taxom |
| Mesopsychidae Tillyard, 1917 | | 1 | Art | Taxom |
| Mesoraphidiidae Martynov, 1925 | | 2 | Arten | Taxom |
| Mesoveliidae Douglas and ..., 1867 | Hüftwasserläufer | 10 | Arten | Taxom |
| Mesozoicaphididae Heie, 1992 | | 6 | Arten | Taxom |
| Metropatoridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Micromalthidae Barber, 1913 | | 1 | Art | Taxom |
| Micronectidae Jaczewski, 1924 | | 5 | Arten | Taxom |
| Micropezidae Illiger, 1798 | Stelzenfliegen | 93 | Arten | Taxom |
| Microphysidae Dohrn, 1859 | Flechtenwanzen | 11 | Arten | Taxom |
| Micropterigidae Herrich-Schä..., 1855 | Urmotten | 6 | Arten | Taxom |
| Milichiidae Schiner, 1862 | Nistfliegen | 81 | Arten | Taxom |
| Mimallonidae Burmeister, 1878 | | 27 | Arten | Taxom |
| Miridae Hahn, 1831 | Blindwanzen | 3570 | Arten | Taxom |
| Mirinidae (Kozlov, 1985) | | 0 | Arten | Taxom |
| Mischopteridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Misthodotidae Tillyard, 1932 | | 7 | Arten | Taxom |
| Mogoplistidae Saussure, 1877 | | 39 | Arten | Taxom |
| Molannidae Wallengren, 1891 | | 3 | Arten | Taxom |
| Monomachidae Ashmead, 1902 | | 4 | Arten | Taxom |
| Monophlebidae Signoret, 1875 | Riesenschildläuse | 30 | Arten | Taxom |
| Monotomidae Laporte, 1840 | Detrituskäfer | 104 | Arten | Taxom |
| Morabidae Rehn, 1948 | | 1 | Art | Taxom |
| Mordellidae Latreille, 1802 | Stachelkäfer | 440 | Arten | Taxom |
| Musapsocidae Mockford, 1967 | | 3 | Arten | Taxom |
| Muscidae Latreille, 1802 | Echte Fliegen | 1136 | Arten | Taxom |
| Mutillidae André, 1907 | Ameisenwespen | 614 | Arten | Taxom |
| Mycetophagidae Leach, 1815 | Baumschwammkäfer | 55 | Arten | Taxom |
| Mycetophilidae Newman, 1834 | Pilzmücken | 1683 | Arten | Taxom |
| Mycteridae Blanchard, 1845 | Haarscheinrüssler | 23 | Arten | Taxom |
| Mydaidae (Osten Sacken, 1874) | | 2 | Arten | Taxom |
| Mydidae Bezzi, 1903 | Mydasfliegen | 137 | Arten | Taxom |
| Myerslopiidae Evans, 1957 | | 1 | Art | Taxom |
| Mylacridae Scudder, 1886 | | 47 | Arten | Taxom |
| Mymaridae Haliday, 1833 | Eierschlupfwespen | 304 | Arten | Taxom |
| Mymarommatidae Debauche, 1948 | | 28 | Arten | Taxom |
| Myopsocidae Enderlein, 1907 | | 12 | Arten | Taxom |
| Myrmecolacidae Saunders, 1872 | | 9 | Arten | Taxom |
| Myrmecophilidae Saussure, 1874 | Ameisengrillen | 10 | Arten | Taxom |
| Myrmeleontidae Latreille, 1802 | Ameisenjungfern | 218 | Arten | Taxom |
| Mythicomyiidae Melander, 1902 | Zwergwollschweber | 2 | Arten | Taxom |
| Nabidae Costa, 1852 | Sichelwanzen | 90 | Arten | Taxom |
| Namurodiaphidae Kukalová-Pec..., 1990 | | 1 | Art | Taxom |
| Narkemidae Handlirsch, 1911 | | 2 | Arten | Taxom |
| Naucoridae Leach, 1815 | Ruderwanzen | 59 | Arten | Taxom |
| Necymylacridae Durden, 1969 | | 5 | Arten | Taxom |
| Nemestrinidae Macquart, 1834 | | 22 | Arten | Taxom |
| Nemonychidae Bedel, 1882 | Ritterspornrüssler | 28 | Arten | Taxom |
| Nemopteridae Rambur, 1842 | Fadenhafte | 4 | Arten | Taxom |
| Nemouridae Newman, 1853 | | 128 | Arten | Taxom |
| Neoephemeridae Traver, 1935 | | 8 | Arten | Taxom |
| Neorthroblattinidae Handlirsch, 1906 | | 3 | Arten | Taxom |
| Nepidae Latreille, 1802 | Skorpionswanzen | 28 | Arten | Taxom |
| Nepticulidae Stainton, 1854 | Zwergminierfalter | 262 | Arten | Taxom |
| Neriidae Hendel, 1916 | | 10 | Arten | Taxom |
| Nesameletidae (Kluge, Stude..., 1995) | | 1 | Art | Taxom |
| Neurostigmatidae | | 1 | Art | Taxom |
| Nicoletiidae Escherich, 1905 | | 25 | Arten | Taxom |
| Ninidae Barber, 1956 | | 1 | Art | Taxom |
| Nitidulidae Latreille, 1802 | Glanzkäfer | 417 | Arten | Taxom |
| Nocticolidae Bolivar, 1892 | | 12 | Arten | Taxom |
| Nocticolinae | | 1 | Art | Taxom |
| Noctuidae Latreille, 1809 | Erdraupen | 6157 | Arten | Taxom |
| Nogodinidae Melichar, 1898 | | 82 | Arten | Taxom |
| Nolidae Hampson, 1894 | Graueulchen | 151 | Arten | Taxom |
| Nosodendridae Erichson, 1846 | Saftkäfer | 10 | Arten | Taxom |
| Noteridae C. G. Thomson, 1860 | Ruderschwimmer | 42 | Arten | Taxom |
| Notodontidae Stephens, 1829 | Zahnspinner | 578 | Arten | Taxom |
| Notonectidae Latreille, 1802 | Rückenschwimmer | 71 | Arten | Taxom |
| Nugonioneuridae Carpenter, 1976 | | 1 | Art | Taxom |
| Nycteribiidae Samouelle, 1819 | Fledermausfliegen | 3 | Arten | Taxom |
| Nymphalidae Rafinesque, 1815 | Edelfalter | 1841 | Arten | Taxom |
| Nymphomyiidae Tokunaga, 1932 | | 2 | Arten | Taxom |
| Ochodaeidae Mulsant & Rey, 1870 | | 55 | Arten | Taxom |
| Odiniidae Hendel, 1920 | | 16 | Arten | Taxom |
| Odontoceridae Wallengren, 1891 | | 23 | Arten | Taxom |
| Oecanthidae (Blanchard, 1845) | | 34 | Arten | Taxom |
| Oeconesidae Tillyard, 1921 | | 2 | Arten | Taxom |
| Oecophoridae Bruand, 1851 | Breitflügelmotten | 156 | Arten | Taxom |
| Oedemeridae Latreille, 1810 | Engdeckenflügler | 130 | Arten | Taxom |
| Oedischiidae Handlirsch, 1906 | | 3 | Arten | Taxom |
| Oestridae Leach, 1815 | Biesfliegen | 84 | Arten | Taxom |
| Oligoneuriidae Ulmer, 1914 | | 35 | Arten | Taxom |
| Oligotomidae Enderlein, 1909 | | 6 | Arten | Taxom |
| Omaniidae Cobben, 1970 | | 1 | Art | Taxom |
| Omethidae LeConte, 1861 | | 12 | Arten | Taxom |
| Ommatidae Sharp & Muir, 1912 | | 1 | Art | Taxom |
| Ommexechidae Bolivar, 1884 | | 1 | Art | Taxom |
| Opomyzidae (Fallen, 1820) | Grasfliegen | 16 | Arten | Taxom |
| Opostegidae Meyrick, 1893 | | 30 | Arten | Taxom |
| Oreoleptidae Zloty, Sincl..., 2005 | | 1 | Art | Taxom |
| Ormyridae Förster, 1856 | | 22 | Arten | Taxom |
| Orsodacnidae Thomson, 1859 | | 27 | Arten | Taxom |
| Ortheziidae Green, 1896 | Röhrenschildläuse | 72 | Arten | Taxom |
| Orthomylacridae see Durden, 1969 | | 44 | Arten | Taxom |
| Orussidae Newman, 1834 | | 13 | Arten | Taxom |
| Osmylidae Leach, 1815 | Bachhafte | 3 | Arten | Taxom |
| Osmylopsychopidae Martynova, 1949 | | 0 | Arten | Taxom |
| Otitidae (Macquart, 1835) | Schmuckfliegen | 208 | Arten | Taxom |
| Oviparosiphidae Shaposhnikov, 1979 | | 1 | Art | Taxom |
| Oxycarenidae Stål, 1862 | | 24 | Arten | Taxom |
| Oxycorynidae (Schoenherr, 1840) | | 1 | Art | Taxom |
| Oxypeltidae Lacordaire, 1869 | | 2 | Arten | Taxom |
| Pachygronthidae Stål, 1865 | | 11 | Arten | Taxom |
| Pachyneuridae Schiner, 1864 | | 1 | Art | Taxom |
| Pachytroctidae Enderlein, 1911 | | 14 | Arten | Taxom |
| Palaeoaphididae Richards, 1966 | | 3 | Arten | Taxom |
| Palaeoblattidae Cockerell, 1927 | | 1 | Art | Taxom |
| Palaeoleontidae Martins-Neto, 1992 | | 2 | Arten | Taxom |
| Palaeomanteidae Handlirsch, 1906 | | 11 | Arten | Taxom |
| Palaeontinidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Palaephatidae Davis, 1986 | | 0 | Arten | Taxom |
| Paleoblattidae Scudder, 1879 | | 18 | Arten | Taxom |
| Paleuthygrammatidae Carpenter, 1943 | | 2 | Arten | Taxom |
| Palingeniidae Albarda, 1888 | | 1 | Art | Taxom |
| Pallopteridae Loew, 1862 | Zitterfliegen | 23 | Arten | Taxom |
| Pamphagidae Burmeister, 1840 | Steinschrecken | 3 | Arten | Taxom |
| Pamphiliidae Cameron, 1890 | Gespinstblattwespen | 105 | Arten | Taxom |
| Panorpidae Linnaeus, 1758 | Skorpionsfliegen | 85 | Arten | Taxom |
| Panorpodidae Byers, 1965 | | 6 | Arten | Taxom |
| Pantophthalmidae Williston, 1906 | | 5 | Arten | Taxom |
| Papilionidae Latreille, 1802 | Ritter | 365 | Arten | Taxom |
| Parabrodiidae Carpenter, 1934 | | 1 | Art | Taxom |
| Paragryllidae (Desutter-Gra..., 1987) | | 9 | Arten | Taxom |
| Paralogidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Paraxymyiidae Rohdendorf, 1946 | | 4 | Arten | Taxom |
| Parelmoidae Rohdendorf, 1962 | | 4 | Arten | Taxom |
| Parmapteridae Aristov & Ra..., 2015 | | 1 | Art | Taxom |
| Passalidae Leach, 1815 | Zuckerkäfer | 157 | Arten | Taxom |
| Pecaroecidae Kéler, 1963 | | 1 | Art | Taxom |
| Pediciidae Osten Sacken, 1860 | | 20 | Arten | Taxom |
| Pedicinidae Enderlein, 1904 | | 4 | Arten | Taxom |
| Pediculidae Leach, 1817 | Menschenläuse | 7 | Arten | Taxom |
| Pelecinidae Haliday, 1839 | | 4 | Arten | Taxom |
| Pelecorhynchidae Philip, 1941 | | 10 | Arten | Taxom |
| Peltoperlidae Claassen, 1931 | | 32 | Arten | Taxom |
| Pentatomidae Leach, 1815 | Baumwanzen | 465 | Arten | Taxom |
| Perforissidae Shcherbakov, 2007 | | 1 | Art | Taxom |
| Pergidae Rohwer, 1911 | | 37 | Arten | Taxom |
| Perilampidae Latreille, 1809 | | 56 | Arten | Taxom |
| Perilestidae Tillyard & F..., 1938 | | 4 | Arten | Taxom |
| Peripsocidae Roesler, 1944 | | 38 | Arten | Taxom |
| Periscelididae Oldenberg, 1914 | Saftfliegen | 22 | Arten | Taxom |
| Perlidae (Latreille, 1802) | | 230 | Arten | Taxom |
| Perlodidae Klapálek, 1912 | | 220 | Arten | Taxom |
| Permelcanidae Sharov, 1962 | | 2 | Arten | Taxom |
| Permelytridae Tillyard, 1931 | | 9 | Arten | Taxom |
| Permithonidae Tillyard, 1922 | | 1 | Art | Taxom |
| Permoberothidae Tillyard, 1932 | | 1 | Art | Taxom |
| Permobiellidae Tillyard, 1937 | | 2 | Arten | Taxom |
| Permochoristidae Tillyard, 1918 | | 4 | Arten | Taxom |
| Permopanorpidae Tillyard, 1926 | | 3 | Arten | Taxom |
| Permopsocidae Tillyard, 1926 | | 5 | Arten | Taxom |
| Permoraphidiidae Tillyard, 1932 | | 2 | Arten | Taxom |
| Permothemidae Martynov, 1935 | | 1 | Art | Taxom |
| Personidae Gray, 1854 | | 12 | Arten | Taxom |
| Petaluridae Needham, 1903 | | 2 | Arten | Taxom |
| Petrablattinidae Durden, 1969 | | 10 | Arten | Taxom |
| Phalacridae Leach, 1815 | Glattkäfer | 145 | Arten | Taxom |
| Phalangopsidae (Chopard, 1949) | | 59 | Arten | Taxom |
| Phasmatidae Roberts, 1944 | | 14 | Arten | Taxom |
| Phasmomimidae Sharov, 1968 | | 4 | Arten | Taxom |
| Phengodidae LeConte, 1861 | Federleuchtkäfer | 98 | Arten | Taxom |
| Phenopteridae Carpenter, 1950 | | 1 | Art | Taxom |
| Philopotamidae Stephens, 1829 | | 125 | Arten | Taxom |
| Philopteridae Burmeister, 1830 | Federlinge | 753 | Arten | Taxom |
| Philotarsidae Pearman, 1936 | | 28 | Arten | Taxom |
| Phlaeothripidae Uzel, 1895 | | 651 | Arten | Taxom |
| Phoberoblattidae Durden, 1969 | | 9 | Arten | Taxom |
| Phoenicococcidae Stickney, 1934 | | 1 | Art | Taxom |
| Phoridae Curtis, 1833 | Buckelfliegen | 748 | Arten | Taxom |
| Phryganeidae (Leach, 1815) | | 40 | Arten | Taxom |
| Phylliidae Redtenbacher, 1906 | Wandelnde Blätter | 0 | Arten | Taxom |
| Phylloxeridae Herrich-Scha..., 1854 | Zwergblattläuse | 70 | Arten | Taxom |
| Phyloblattidae Schneider, 1983 | | 1 | Art | Taxom |
| Pieridae Duponchel, 1835 | Weißlinge | 415 | Arten | Taxom |
| Piesmatidae Amyot & Audi..., 1843 | Meldenwanzen | 19 | Arten | Taxom |
| Piophilidae Macquart, 1835 | Käsefliegen | 81 | Arten | Taxom |
| Pipunculidae Walker, 1834 | Augenfliegen | 317 | Arten | Taxom |
| Pityococcidae Mckenzie, 1942 | | 6 | Arten | Taxom |
| Plataspidae (Dallas, 1851) | Breitschildwanzen | 3 | Arten | Taxom |
| Plataspididae (Dallas, 1851) | Kugelwanzen | 0 | Arten | Taxom |
| Platycnemididae Tillyard, 1917 | Federlibellen | 2 | Arten | Taxom |
| Platygastridae Haliday, 1833 | | 334 | Arten | Taxom |
| Platypezidae Fallen, 1815 | Pilzfliegen | 115 | Arten | Taxom |
| Platystictidae Laidlaw, 1924 | | 13 | Arten | Taxom |
| Platystomatidae Schiner, 1862 | Breitmundfliegen | 106 | Arten | Taxom |
| Pleidae Fieber, 1817 | Zwergrückenschwimmer | 8 | Arten | Taxom |
| Pleocomidae LeConte, 1861 | | 37 | Arten | Taxom |
| Plokiophilidae China, 1953 | | 1 | Art | Taxom |
| Plumalexiidae Brothers, 2011 | | 1 | Art | Taxom |
| Plutellidae Guenée, 1845 | Halbmotten | 73 | Arten | Taxom |
| Podoscirtidae Saussure, 1878 | | 54 | Arten | Taxom |
| Polycentropodidae Ulmer, 1903 | | 160 | Arten | Taxom |
| Polycreagridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Polyctenidae Westwood, 1874 | Fledermauswanzen | 3 | Arten | Taxom |
| Polymitarcyidae Banks, 1900 | | 16 | Arten | Taxom |
| Polyplacidae Fahrenholz, 1912 | | 39 | Arten | Taxom |
| Polystoechotidae Handlirsch, 1906 | | 5 | Arten | Taxom |
| Polythoridae Munz, 1919 | | 3 | Arten | Taxom |
| Pompilidae Latreille, 1805 | Wegwespen | 514 | Arten | Taxom |
| Ponopterixidae Nel & al., 2014 | | 2 | Arten | Taxom |
| Poroblattinidae Handlirsch, 1906 | | 12 | Arten | Taxom |
| Potamanthidae Albarda, 1888 | | 6 | Arten | Taxom |
| Prionoceridae Lacaordaire, 1857 | | 1 | Art | Taxom |
| Prionoglarididae Badonnel, 1951 | | 6 | Arten | Taxom |
| Prisopodidae Brunner von ..., 1893 | | 3 | Arten | Taxom |
| Probnidae Sellards, 1909 | | 2 | Arten | Taxom |
| Prochoropteridae Handlirsch, 1911 | | 1 | Art | Taxom |
| Procramptonomyiidae Kovalev, 1985 | | 2 | Arten | Taxom |
| Proctotrupidae Latreille, 1802 | Zehrwespen | 107 | Arten | Taxom |
| Prodoxidae Riley, 1881 | Rosen-Blattsackfalter | 103 | Arten | Taxom |
| Promastacidae Kevan & Wighton, 1981 | | 2 | Arten | Taxom |
| Prophalangopsidae Saussure, 1878 | | 6 | Arten | Taxom |
| Prosbolidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Proscopiidae Serville, 1838 | Pferdekopfschrecken | 1 | Art | Taxom |
| Prosechamyiidae Blagoderov &..., 2007 | | 2 | Arten | Taxom |
| Prosopistomatidae Lameere, 1917 | | 6 | Arten | Taxom |
| Prostomidae C. G. Thomson, 1859 | Schaufelkäfer | 3 | Arten | Taxom |
| Protelytridae Tillyard, 1931 | | 5 | Arten | Taxom |
| Protembiidae Tillyard, 1937 | | 3 | Arten | Taxom |
| Protereismatidae Lameere, 1917 | | 15 | Arten | Taxom |
| Protohymenidae Tillyard, 1924 | | 13 | Arten | Taxom |
| Protomeropidae Tillyard, 1926 | | 1 | Art | Taxom |
| Protoneuridae Tillyard, 1917 | | 3 | Arten | Taxom |
| Protophasmatidae Brongniart, 1885 | | 1 | Art | Taxom |
| Protophasmidae (Scudder, 1885) | | 1 | Art | Taxom |
| Protopsyllidiidae Becker-Migdi..., 1960 | | 1 | Art | Taxom |
| Protorhyphidae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Pruvostitidae Zalessky, 1929 | | 4 | Arten | Taxom |
| Prygidae Aristov & Ra..., 2014 | | 1 | Art | Taxom |
| Pselaphidae (Lameere, 1900) | Palpenkäfer | 3 | Arten | Taxom |
| Psephenidae Lacordaire, 1854 | Bachkäfer | 32 | Arten | Taxom |
| Pseudocaeciliidae Pearman, 1936 | | 19 | Arten | Taxom |
| Pseudococcidae Heymons, 1915 | Schmierläuse | 534 | Arten | Taxom |
| Pseudophasmatidae Kirby, 1896 | | 14 | Arten | Taxom |
| Pseudophyllodromiidae Hebard, 1929 | | 77 | Arten | Taxom |
| Pseudopolycentropodidae Handlirsch, 1925 | | 2 | Arten | Taxom |
| Pseudostigmatidae Tillyard, 1917 | | 7 | Arten | Taxom |
| Psilidae Macquart, 1835 | Nacktfliegen | 109 | Arten | Taxom |
| Psilopsocidae Roesler, 1944 | | 1 | Art | Taxom |
| Psocidae Samouelle, 1819 | Holzläuse | 143 | Arten | Taxom |
| Psocidiidae Tillyard, 1926 | | 8 | Arten | Taxom |
| Psoquillidae Lienhard & S..., 2002 | | 19 | Arten | Taxom |
| Psoropteridae Carpenter, 1977 | | 1 | Art | Taxom |
| Psychidae Boisduval, 1828 | Echte Sackträger | 79 | Arten | Taxom |
| Psychodidae Newman, 1834 | Schmetterlingsmücken | 343 | Arten | Taxom |
| Psychomyiidae Walker, 1852 | | 35 | Arten | Taxom |
| Psychopsidae Handlirsch, 1906 | | 6 | Arten | Taxom |
| Psyllidae Latreille, 1807 | Blattflöhe | 459 | Arten | Taxom |
| Psyllipsocidae Enderlein, 1903 | | 29 | Arten | Taxom |
| Pteridomylacridae Handlirsch, 1906 | | 2 | Arten | Taxom |
| Pterolonchidae Meyrick, 1918 | | 1 | Art | Taxom |
| Pteromalidae Dalman, 1820 | | 916 | Arten | Taxom |
| Pteronarcyidae Enderlein, 1909 | | 15 | Arten | Taxom |
| Pterophoridae Zeller, 1841 | Federgeistchen | 480 | Arten | Taxom |
| Pthiridae Leach, 1817 | | 4 | Arten | Taxom |
| Ptiliidae Heer, 1843 | Federflügler | 192 | Arten | Taxom |
| Ptilodactylidae Laporte, 1836 | | 54 | Arten | Taxom |
| Ptiloneuridae Eertmoed, 1973 | | 10 | Arten | Taxom |
| Ptinidae Latreille, 1802 | Diebkäfer | 693 | Arten | Taxom |
| Ptychopteridae Osten Sacken, 1862 | Faltenmücken | 26 | Arten | Taxom |
| Pulicidae Billberg, 1820 | Menschenflöhe | 50 | Arten | Taxom |
| Putoidae Beardsley, 1969 | | 31 | Arten | Taxom |
| Pygidicranidae (Verhoeff, 1902) | | 3 | Arten | Taxom |
| Pygiopsyllidae Wagner, 1939 | | 6 | Arten | Taxom |
| Pyralidae Latreille, 1802 | Echte Zünsler | 1367 | Arten | Taxom |
| Pyrgomorphidae Brunner von ..., 1874 | Kegelkopfschrecken | 40 | Arten | Taxom |
| Pyrgotidae Schiner, 1868 | | 20 | Arten | Taxom |
| Pyrochroidae Latreille, 1807 | Feuerkäfer | 71 | Arten | Taxom |
| Pyrrhocoridae Dohrn, 1859 | Feuerwanzen | 16 | Arten | Taxom |
| Pythidae Solier, 1834 | Drachenkäfer | 10 | Arten | Taxom |
| Raaschiidae Beckemeyer, 2004 | | 1 | Art | Taxom |
| Rafaelianidae Engel & Nel, 2017 | | 0 | Arten | Taxom |
| Rangomaramidae Jaschhof & D..., 2002 | Langflügel-Pilzmücken | 2 | Arten | Taxom |
| Raphidiidae Latreille, 1810 | Kamelhalsfliegen | 38 | Arten | Taxom |
| Raphidiomimidae Vishniakova, 1973 | | 0 | Arten | Taxom |
| Reduviidae Latreille, 1807 | Raubwanzen | 424 | Arten | Taxom |
| Rhachiberothidae Tjeder, 1959 | | 3 | Arten | Taxom |
| Rhagionidae Latreille, 1802 | Schnepfenfliegen | 194 | Arten | Taxom |
| Rhaphidiopsidae Handlirsch, 1906 | | 1 | Art | Taxom |
| Rhaphidophoridae Walker, 1869 | Buckelschrecken | 196 | Arten | Taxom |
| Rhiniidae Brauer & Ber..., 1889 | | 1 | Art | Taxom |
| Rhinophoridae Robineau-Des..., 1863 | Asselfliegen | 24 | Arten | Taxom |
| Rhinotermitidae Froggatt, 1897 | Nasentermiten | 42 | Arten | Taxom |
| Rhipiceridae Latreille, 1834 | Fächerkäfer | 9 | Arten | Taxom |
| Rhipiphoridae Gemminger & ..., 1870 | Fächerkäfer | 39 | Arten | Taxom |
| Rhizoecidae Williams, 1969 | | 60 | Arten | Taxom |
| Rhopalidae Amyot & Serv..., 1843 | Glasflügelwanzen | 70 | Arten | Taxom |
| Rhopalopsyllidae Oudemans, 1909 | | 17 | Arten | Taxom |
| Rhopalosomatidae Ashmead, 1896 | | 9 | Arten | Taxom |
| Rhyacophilidae Stephens, 1836 | | 2 | Arten | Taxom |
| Rhynchitidae Gistel, 1848 | Blattstecher | 24 | Arten | Taxom |
| Rhyparochromidae Amyot & Serv..., 1843 | | 316 | Arten | Taxom |
| Rhyphidae (Newman, 1834) | | 0 | Arten | Taxom |
| Ricaniidae Amyot & Audi..., 1843 | | 10 | Arten | Taxom |
| Richardidae Snow, 1896 | | 34 | Arten | Taxom |
| Richardiidae (Snow, 1896) | | 9 | Arten | Taxom |
| Ricinidae Neumann, 1890 | | 37 | Arten | Taxom |
| Riodinidae Grote, 1895 | Würfelfalter | 356 | Arten | Taxom |
| Ripiphoridae Gemminger & ..., 1870 | Fächerkäfer | 59 | Arten | Taxom |
| Ripipterygidae Ander, 1939 | | 8 | Arten | Taxom |
| Roeslerstammiidae Bruand, 1850 | | 1 | Art | Taxom |
| Romaleidae Brunner von ..., 1893 | Lümmelheuschrecken | 55 | Arten | Taxom |
| Ropalomeridae Linder, 1930 | | 9 | Arten | Taxom |
| Roproniidae Bradley, 1905 | | 3 | Arten | Taxom |
| Rossianidae Gall, 1996 | | 1 | Art | Taxom |
| Rutelidae (MacLeay, 1819) | Gartenkäfer | 104 | Arten | Taxom |
| Saldidae Amyot and Se..., 1843 | Springwanzen | 110 | Arten | Taxom |
| Salpingidae Leach, 1815 | Scheinrüßler | 52 | Arten | Taxom |
| Sapygidae Latreille, 1810 | Keulenwespen | 23 | Arten | Taxom |
| Sarcophagidae Macquart, 1834 | Aasfliegen | 882 | Arten | Taxom |
| Saturniidae Boisduval, 1837 | Augenspinner | 407 | Arten | Taxom |
| Scarabaeidae Latreille, 1802 | Blatthornkäfer | 4808 | Arten | Taxom |
| Scathophagidae Robineau-Des..., 1830 | Dungfliegen | 225 | Arten | Taxom |
| Scatopsidae Newman, 1834 | Dungmücken | 144 | Arten | Taxom |
| Scelionidae Haliday, 1839 | | 574 | Arten | Taxom |
| Scenopinidae Burmeister, 1835 | Fensterfliegen | 169 | Arten | Taxom |
| Schizoblattidae Durden, 1969 | | 15 | Arten | Taxom |
| Schizopodidae (LeConte, 1859) | | 8 | Arten | Taxom |
| Schizopteridae Reuter, 1891 | | 20 | Arten | Taxom |
| Schreckensteiniidae Fletcher, 1929 | | 4 | Arten | Taxom |
| Sciadoceridae (Schmitz, 1929) | | 1 | Art | Taxom |
| Sciaridae Billberg, 1820 | Trauermücken | 21 | Arten | Taxom |
| Sciomyzidae Fallen, 1820 | Hornfliegen | 283 | Arten | Taxom |
| Scirtidae Fleming, 1821 | Sumpffieberkäfer | 108 | Arten | Taxom |
| Sclerogibbidae Ashmead, 1902 | | 4 | Arten | Taxom |
| Scolebythidae Evans, 1963 | | 5 | Arten | Taxom |
| Scoliidae Leach, 1815 | Dolchwespen | 36 | Arten | Taxom |
| Scolytidae (Latreille, 1807) | Borkenkäfer | 3 | Arten | Taxom |
| Scraptiidae Mulsant, 1856 | Scheinstachelkäfer | 61 | Arten | Taxom |
| Scutelleridae Leach, 1815 | Schildwanzen | 55 | Arten | Taxom |
| Scydmaenidae (Leach, 1815) | Ameisenkäfer | 518 | Arten | Taxom |
| Scythrididae Rebel, 1901 | Heidefalter | 3 | Arten | Taxom |
| Scytinopteridae Handlirsch, 1906 | | 1 | Art | Taxom |
| Sematuridae Guenée, 1858 | | 9 | Arten | Taxom |
| Sepsidae Walker, 1833 | Schwingfliegen | 75 | Arten | Taxom |
| Sepulcidae Rasnitsyn, 1968 | | 1 | Art | Taxom |
| Serendipidae Evenhuis, 1994 | | 0 | Arten | Taxom |
| Sericostomatidae Stephens, 1836 | | 17 | Arten | Taxom |
| Serpentivenidae Shcherbakov, 1984 | | 1 | Art | Taxom |
| Serphitidae Brues, 1937 | | 9 | Arten | Taxom |
| Sesiidae Boisduval, 1828 | Glasflügler | 294 | Arten | Taxom |
| Sialidae Leach, 1815 | Schlammfliegen | 33 | Arten | Taxom |
| Sierolomorphidae Krombein, 1951 | | 8 | Arten | Taxom |
| Signiphoridae Howard, 1894 | | 48 | Arten | Taxom |
| Silphidae Latreille, 1807 | Aaskäfer | 99 | Arten | Taxom |
| Silvanidae Kirby, 1837 | Plattkäfer | 89 | Arten | Taxom |
| Simuliidae Newman, 1834 | Kriebelmücken | 405 | Arten | Taxom |
| Siphlonuridae Banks, 1900 | | 81 | Arten | Taxom |
| Siricidae Billberg, 1820 | Holzwespen | 36 | Arten | Taxom |
| Sisyridae Handlirsch, 1908 | Schwammfliegen | 10 | Arten | Taxom |
| Smicripidae Horn, 1879 | | 2 | Arten | Taxom |
| Sojanoraphidiidae Martynova, 1952 | | 1 | Art | Taxom |
| Spanioderidae Handlirsch, 1906 | | 9 | Arten | Taxom |
| Spathiopterygidae Engel & Orte..., 2013 | | 1 | Art | Taxom |
| Sphaeritidae Schuckard, 1839 | Scheinstutzkäfer | 1 | Art | Taxom |
| Sphaeriusidae Erichson, 1845 | Kugelkäfer | 4 | Arten | Taxom |
| Sphaeroceridae Macquart, 1835 | Dungfliegen | 418 | Arten | Taxom |
| Sphaeropsocidae Kolbe, 1883 | | 3 | Arten | Taxom |
| Sphecidae Latreille, 1802 | Grabwespen | 237 | Arten | Taxom |
| Sphindidae Jacquelin du..., 1860 | Schleimpilzkäfer | 12 | Arten | Taxom |
| Sphingidae Latreille, 1802 | Schwärmer | 422 | Arten | Taxom |
| Spilapteridae Brongniart, 1894 | | 4 | Arten | Taxom |
| Spiloblattinidae Handlirsch, 1906 | | 50 | Arten | Taxom |
| Spiralizoridae Kocarek, Ho..., 2020 | | 2 | Arten | Taxom |
| Spongiphoridae Verhoeff, 1902 | | 6 | Arten | Taxom |
| Spurostigmatidae Casasola Gon..., 2006 | | 3 | Arten | Taxom |
| Srokalarvidae Haug & al., 2016 | | 1 | Art | Taxom |
| Staphylinidae Lameere, 1900 | Halbflügler | 8496 | Arten | Taxom |
| Steingeliidae Morrison, 1927 | | 4 | Arten | Taxom |
| Stenopelmatidae Burmeister, 1838 | | 31 | Arten | Taxom |
| Stenopsocidae Pearman, 1936 | | 2 | Arten | Taxom |
| Stenopsychidae Martynov, 1924 | | 1 | Art | Taxom |
| Stenotrachelidae C. G. Thomson, 1859 | | 19 | Arten | Taxom |
| Stephanidae Leach, 1815 | | 20 | Arten | Taxom |
| Stereopteridae Carpenter, 1950 | | 3 | Arten | Taxom |
| Stigmacoccidae Morrison giv..., 2006 | | 1 | Art | Taxom |
| Stigmaphronidae Kozlov, 1975 | | 9 | Arten | Taxom |
| Stivaliidae Mardon, 1978 | | 2 | Arten | Taxom |
| Stolamissidae Liu & Engel, 2007 | | 1 | Art | Taxom |
| Stratiomyidae Latreille, 1802 | Waffenfliegen | 640 | Arten | Taxom |
| Streblidae (Kolenati, 1863) | | 21 | Arten | Taxom |
| Strephocladidae Martynov, 1938 | | 1 | Art | Taxom |
| Strongylophthalmyiidae Hennig, 1940 | | 6 | Arten | Taxom |
| Styloperlidae Illies, 1966 | | 2 | Arten | Taxom |
| Stylopidae Kirby, 1813 | | 135 | Arten | Taxom |
| Susumaniidae Gorochov, 1988 | | 1 | Art | Taxom |
| Sylvabestiidae Aristov, 2000 | | 1 | Art | Taxom |
| Synchroidae Lacordaire, 1859 | | 1 | Art | Taxom |
| Synteliidae Lewis, 1882 | | 2 | Arten | Taxom |
| Syntomidae (Herrich Scha..., 1846) | Scheinwidderchen | 2 | Arten | Taxom |
| Syntonopteridae Handlirsch, 1911 | | 3 | Arten | Taxom |
| Syringogastridae Prado, 1969 | | 4 | Arten | Taxom |
| Syrphidae Latreille, 1802 | Larven: Blattlaus-Löwen | 1775 | Arten | Taxom |
| Tabanidae Latreille, 1802 | Bremsen | 764 | Arten | Taxom |
| Tachardiidae Green, 1896 | | 14 | Arten | Taxom |
| Tachinidae (Robineau-Des..., 1830) | Raupenfliegen | 3187 | Arten | Taxom |
| Taeniopterygidae Klapálek, 1905 | | 51 | Arten | Taxom |
| Tanaoceridae Rehn, 1948 | | 4 | Arten | Taxom |
| Tanaostigmatidae Howard, 1890 | | 32 | Arten | Taxom |
| Tanyderidae Alexander, 1919 | | 5 | Arten | Taxom |
| Tanypezidae Rondani, 1856 | Streckfußfliegen | 5 | Arten | Taxom |
| Tarachodidae Handlirsch, 1930 | | 1 | Art | Taxom |
| Tasimiidae Riek, 1968 | | 1 | Art | Taxom |
| Telegeusidae (LeConte, 1861) | | 16 | Arten | Taxom |
| Tenebrionidae Latreille, 1802 | Dunkelkäfer | 2585 | Arten | Taxom |
| Teneopteridae (Richardson, 1956) | | 1 | Art | Taxom |
| Tenthredinidae Latreille, 1804 | Blattwespen | 940 | Arten | Taxom |
| Tephritidae Newman, 1834 | Bohrfliegen | 864 | Arten | Taxom |
| Teratembiidae Krauss, 1911 | | 14 | Arten | Taxom |
| Teredidae Seidlitz, 1888 | | 6 | Arten | Taxom |
| Termitaphididae Myers, 1924 | | 2 | Arten | Taxom |
| Termitidae Latreille, 1802 | Höhere Termiten | 61 | Arten | Taxom |
| Termopsidae Grassé, 1949 | Feuchtholztermiten | 6 | Arten | Taxom |
| Tessaratomidae Stål, 1864 | | 1 | Art | Taxom |
| Tethinidae (Hendel, 1916) | | 57 | Arten | Taxom |
| Tetracampidae Förster, 1856 | | 10 | Arten | Taxom |
| Tetratomidae Billberg, 1820 | Keulendüsterkäfer | 52 | Arten | Taxom |
| Tetrigidae Rambur, 1838 | Dornschrecken | 80 | Arten | Taxom |
| Tettigarctidae Distant, 1905 | | 1 | Art | Taxom |
| Tettigometridae Germar, 1821 | Ameisenzikaden | 1 | Art | Taxom |
| Tettigoniidae Krauss, 1902 | Laubheuschrecken | 739 | Arten | Taxom |
| Thanerocleridae Chapin, 1921 | | 5 | Arten | Taxom |
| Thaumaleidae Bezzi, 1913 | Dunkelmücken | 35 | Arten | Taxom |
| Thaumastocoridae Kirkaldy, 1908 | | 2 | Arten | Taxom |
| Thaumatoneuridae Fraser, 1957 | | 7 | Arten | Taxom |
| Therevidae Newman, 1834 | Dolchfliegen | 377 | Arten | Taxom |
| Thericleidae Burr, 1899 | | 1 | Art | Taxom |
| Thespidae Giglio-Tos, 1919 | | 17 | Arten | Taxom |
| Thripidae Stevens, 1829 | Blasenfüßer | 692 | Arten | Taxom |
| Throscidae Laporte, 1840 | Hüpfkäfer | 33 | Arten | Taxom |
| Thueringoedischiidae Zessin, 1997 | | 1 | Art | Taxom |
| Thynnidae Shuckard, 1841 | | 8 | Arten | Taxom |
| Thyreocoridae Amyot and Se..., 1843 | | 54 | Arten | Taxom |
| Thyrididae Herrich-Schä..., 1846 | Fensterfleckchen | 42 | Arten | Taxom |
| Timematidae Caudell, 1903 | | 27 | Arten | Taxom |
| Tineidae Latreille, 1810 | Echte Motten | 523 | Arten | Taxom |
| Tingidae Laporte, 1832 | Blasenwanzen | 288 | Arten | Taxom |
| Tiphiidae Leach, 1815 | Rollwespen | 332 | Arten | Taxom |
| Tipulidae Latreille, 1802 | Bachmücken | 2660 | Arten | Taxom |
| Tischeriidae Spuler, 1898 | Schopfstirnfalter | 116 | Arten | Taxom |
| Tococladidae Carpenter, 1966 | | 3 | Arten | Taxom |
| Tortricidae Latreille, 1803 | Blattroller | 3382 | Arten | Taxom |
| Torymidae Walker, 1833 | Erzwespen | 382 | Arten | Taxom |
| Trachopterygidae Carpenter, 1976 | | 1 | Art | Taxom |
| Trachypachidae C. G. Thomson, 1857 | | 11 | Arten | Taxom |
| Triassoblattidae Durden, 1969 | | 2 | Arten | Taxom |
| Trichoceridae Rondani, 1841 | Wintermücken | 44 | Arten | Taxom |
| Trichodectidae Kellogg, 1896 | | 168 | Arten | Taxom |
| Trichogrammatidae Haliday, 1851 | | 163 | Arten | Taxom |
| Trichopsocidae Pearman, 1936 | | 4 | Arten | Taxom |
| Tricorythidae Lestage, 1942 | | 0 | Arten | Taxom |
| Tridactylidae Saussure, 1874 | Grabschrecken | 15 | Arten | Taxom |
| Trigonalidae (Cresson, 1887) | Leistenwespen | 7 | Arten | Taxom |
| Trigonidiidae (Saussure, 1870) | | 90 | Arten | Taxom |
| Trimenoponidae Harrison, 1916 | | 2 | Arten | Taxom |
| Triozidae Löw, 1879 | | 98 | Arten | Taxom |
| Tristiridae Rehn, 1906 | | 2 | Arten | Taxom |
| Troctopsocidae Mockford, 1967 | | 4 | Arten | Taxom |
| Trogidae (MacLeay, 1819) | Erdkäfer | 105 | Arten | Taxom |
| Trogiidae Enderlein, 1903 | Staubläuse | 18 | Arten | Taxom |
| Trogossitidae Latreille, 1802 | Flachkäfer | 121 | Arten | Taxom |
| Tropiduchidae Stål, 1866 | Mückenzikaden | 22 | Arten | Taxom |
| Tshekardocoleidae Rohdendorf, 1944 | | 1 | Art | Taxom |
| Uenoidae Iwata, 1927 | | 19 | Arten | Taxom |
| Ulidiidae Macquart, 1835 | Metallfliegen | 35 | Arten | Taxom |
| Umenocoleidae Chen & Tian, 1973 | | 2 | Arten | Taxom |
| Uraniidae Blanchard, 1845 | Uraniafalter | 42 | Arten | Taxom |
| Urodidae Kyrki, 1984 | | 6 | Arten | Taxom |
| Urolibellulidae Zeiri & al., 2015 | | 1 | Art | Taxom |
| Vanhorniidae Crawford, 1909 | | 1 | Art | Taxom |
| Veliidae Amyot & Serv..., 1843 | Bachläufer | 86 | Arten | Taxom |
| Vermileonidae Williston, 1886 | Wurmlöwen | 5 | Arten | Taxom |
| Vermipsyllidae Wagner, 1889 | | 8 | Arten | Taxom |
| Vesperidae Mulsant, 1839 | | 5 | Arten | Taxom |
| Vespidae Leach, 1815 | Echte Wespen | 771 | Arten | Taxom |
| Vitimiidae Sharov, 1968 | | 0 | Arten | Taxom |
| Xenidae Pohl & Beutel, 2005 | | 34 | Arten | Taxom |
| Xenoblattidae Durden, 1969 | | 5 | Arten | Taxom |
| Xiphocentronidae Schmid, 1982 | | 21 | Arten | Taxom |
| Xiphydriidae Leach, 1819 | Schwertwespen | 12 | Arten | Taxom |
| Xyelidae Newman, 1835 | Urblattwespen | 56 | Arten | Taxom |
| Xylococcidae (Pergrande, 1898) | | 5 | Arten | Taxom |
| Xylomyidae Verrall, 1901 | Holz-Waffenfliegen | 30 | Arten | Taxom |
| Xylophagidae Fallen, 1810 | Holzfliegen | 35 | Arten | Taxom |
| Xyloryctidae Meyrick, 1890 | | 94 | Arten | Taxom |
| Xyronotidae Bolivar, 1909 | | 4 | Arten | Taxom |
| Yponomeutidae Stephens, 1829 | Gespinst- und Knospenmotten | 158 | Arten | Taxom |
| Ypsolophidae Guenée, 1845 | Knospenmotten | 69 | Arten | Taxom |
| Zacallitidae Cockerell, 1928 | Ausgestorbene Familie | 1 | Art | Taxom |
| Zopheridae Solier, 1834 | Rindenkäfer | 274 | Arten | Taxom |
| Zorotypidae Silvestri, 1913 | | 5 | Arten | Taxom |
| Zygaenidae Latreille, 1809 | Blutströpfchen | 108 | Arten | Taxom |
