| Acroceridae Leach, 1815 | Hunch-back flies | 8 | Species | Taxom |
| Adelidae Bruand, 1851 | Adelid Moths | 3 | Species | Taxom |
| Ademosynidae Ponomarenko, 1968 | | 12 | Species | Taxom |
| Aderidae Winkler, 1927 | Ant-like leaf beetles | 1 | Species | Taxom |
| Agromyzidae Fallen, 1823 | Leaf miner flies | 18 | Species | Taxom |
| Agyrtidae Thomson, 1859 | Primitive carrion beetles | 7 | Species | Taxom |
| Alucitidae Leach, 1815 | Many Plumed Moths | 2 | Species | Taxom |
| Anaxyelidae Martynov, 1925 | Anaxyelids | 28 | Species | Taxom |
| Andrenidae Webster, 1913 | Andrenid bees | 65 | Species | Taxom |
| Aneuretopsychidae Rasnitsyn & ..., 1990 | | 2 | Species | Taxom |
| Anisopodidae Knab, 1912 | Window Midges | 6 | Species | Taxom |
| Anomopterellidae (Rasnitsyn, 1975) | | 1 | Species | Taxom |
| Ansorgiidae Krzeminski &..., 1993 | | 1 | Species | Taxom |
| Antefungivoridae Rohdendorf, 1938 | | 10 | Species | Taxom |
| Anthicidae Latreille, 1819 | Ant beetles | 13 | Species | Taxom |
| Anthomyiidae Robineau-Des..., 1830 | Anthomyiid flies | 19 | Species | Taxom |
| Anthomyzidae Czerny, 1903 | Anthomyzid flies | 1 | Species | Taxom |
| Anthribidae Billberg, 1820 | Fungus Weevil | 10 | Species | Taxom |
| Apataniidae Wallengren, 1886 | Early Smoky Wing Sedges | 9 | Species | Taxom |
| Aphelinidae Thomson, 1876 | Aphelinid wasps | 13 | Species | Taxom |
| Apidae Latreille, 1802 | Bumble bees | 153 | Species | Taxom |
| Archisargidae Rohdendorf, 1962 | | 11 | Species | Taxom |
| Archizelmiridae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Arctiidae Leach, 1815 | Footman moths | 11 | Species | Taxom |
| Argidae Konow, 1890 | Argid flies | 2 | Species | Taxom |
| Asilidae Latreille, 1802 | Assassin flies | 257 | Species | Taxom |
| Atelestidae Hennig, 1970 | | 1 | Species | Taxom |
| Attelabidae Billberg, 1820 | Leaf Rolling Weevil | 36 | Species | Taxom |
| Aulacigastridae Wollaston, 1864 | Aulacigastrid flies | 1 | Species | Taxom |
| Batrachedridae Heinemann & ..., 1876 | Batrachedrid Moths | 2 | Species | Taxom |
| Beraeidae Wallengren, 1891 | Small eastern caddisflies | 1 | Species | Taxom |
| Bethylonymidae Rasnitsyn, 1975 | | 18 | Species | Taxom |
| Bibionidae Fleming, 1821 | Bibionid flies | 4 | Species | Taxom |
| Bittacidae Handlirsch, 1906 | Hanging scorpionflies | 17 | Species | Taxom |
| Blephariceridae Loew, 1861 | Mountain midges | 8 | Species | Taxom |
| Bombycidae Latreille, 1802 | Lappet moths | 2 | Species | Taxom |
| Bombyliidae Latreille, 1802 | Bee Flies | 379 | Species | Taxom |
| Boreidae Latreille, 1816 | Snow fleas | 2 | Species | Taxom |
| Bostrichidae Latreille, 1802 | Auger beetles | 18 | Species | Taxom |
| Brachodidae Agenjo, 1966 | Little Bear Moths | 1 | Species | Taxom |
| Brachycentridae Ulmer, 1903 | Humpless Casemaker Caddisflies | 3 | Species | Taxom |
| Brachyceridae (Billberg, 1820) | Brachycerids | 4 | Species | Taxom |
| Brachypteridae (Erichson, 1845) | Short-winged Flower Beetles | 2 | Species | Taxom |
| Braconidae Latreille, 1829 | Braconid wasps | 112 | Species | Taxom |
| Bradynobaenidae Saussure, 1892 | Bradynobaenid wasps | 1 | Species | Taxom |
| Brentidae Billberg, 1820 | Brenthidae | 19 | Species | Taxom |
| Buprestidae Leach, 1815 | Flat-headed wood-borers | 145 | Species | Taxom |
| Byrrhidae Latreille, 1804 | Moss beetles | 3 | Species | Taxom |
| Calliphoridae Brauer & Ber..., 1889 | Blow flies | 10 | Species | Taxom |
| Cantharidae Imhoff, 1856 | Cantharids | 27 | Species | Taxom |
| Canthyloscelidae Enderlein, 1912 | | 2 | Species | Taxom |
| Carabidae Latreille, 1802 | Carabid beetles | 1779 | Species | Taxom |
| Carnidae Newman, 1834 | Bird flies | 5 | Species | Taxom |
| Cecidomyiidae Newman, 1834 | Forest Midges | 764 | Species | Taxom |
| Cephidae Newman, 1834 | Cephids | 10 | Species | Taxom |
| Cerambycidae Latreille, 1802 | Long Horn beetles | 432 | Species | Taxom |
| Ceraphronidae Haliday, 1833 | Ceraphronid wasps | 0 | Species | Taxom |
| Ceratophyllidae Dampf, 1908 | Bird Fleas | 43 | Species | Taxom |
| Ceratopogonidae Newman, 1834 | Biting midge | 111 | Species | Taxom |
| Chalcididae Latreille, 1817 | Chalcidid wasps | 16 | Species | Taxom |
| Chamaemyiidae Hendel, 1910 | Aphid flies | 10 | Species | Taxom |
| Chaoboridae Newman, 1834 | Phantom midge | 2 | Species | Taxom |
| Chironomidae Erichson, 1842 | Chironomids | 18 | Species | Taxom |
| Chloropidae Schoenherr, 1840 | Chloropid flies | 17 | Species | Taxom |
| Chrysididae Latreille, 1802 | Chrysidid wasps | 12 | Species | Taxom |
| Chrysomelidae Latreille, 1802 | Casebearers | 93 | Species | Taxom |
| Chyromyidae Hendel, 1916 | Chiromyid flies | 8 | Species | Taxom |
| Ciidae Leach, 1819 | Minute tree fungus beetles | 2 | Species | Taxom |
| Cimbicidae Kirby, 1837 | Cimbicid sawflies | 2 | Species | Taxom |
| Cladochoristidae Tillyard, 1926 | | 1 | Species | Taxom |
| Cleridae Latreille, 1802 | Checkered Beetle | 7 | Species | Taxom |
| Coccinellidae Latreille, 1807 | Coccinelles | 30 | Species | Taxom |
| Coelocatiniidae Ponomarenko, 1968 | | 6 | Species | Taxom |
| Coleophoridae Hübner, 1825 | Case moths | 161 | Species | Taxom |
| Colletidae Lepeletier, 1841 | Colletid bees | 46 | Species | Taxom |
| Colymbotethidae Ponomarenko, 1993 | | 1 | Species | Taxom |
| Conopidae Latreille, 1802 | Thick-headed Flies | 5 | Species | Taxom |
| Coptoclavidae Ponomarenko, 1961 | Extinct family | 9 | Species | Taxom |
| Coptopsyllidae Wagner, 1928 | | 6 | Species | Taxom |
| Cosmopterigidae Heinemann & ..., 1876 | Cosmet Moths | 11 | Species | Taxom |
| Cossidae Leach, 1815 | Borers | 137 | Species | Taxom |
| Crabronidae Latreille, 1802 | Bee Wolves | 37 | Species | Taxom |
| Crambidae Latreille, 1810 | Crambid Snout Moths | 105 | Species | Taxom |
| Cryptochetidae Brues & Mela..., 1932 | Cryptochetid Flies | 1 | Species | Taxom |
| Cryptophagidae Kirby, 1937 | Mould beetles | 4 | Species | Taxom |
| Ctenophthalmidae Rothschild, 1915 | | 23 | Species | Taxom |
| Cucujidae Latreille, 1802 | Flat bark beetles | 2 | Species | Taxom |
| Culicidae Meigen, 1818 | Mosquito | 12 | Species | Taxom |
| Cupedidae Laporte, 1836 | Cupedids | 30 | Species | Taxom |
| Curculionidae Latreille, 1802 | Ambrosia beetles | 932 | Species | Taxom |
| Cynipidae Latreille, 1802 | Cynipid gall wasps | 3 | Species | Taxom |
| Dascillidae Guérin-Ménev..., 1843 | Orchid beetles | 2 | Species | Taxom |
| Dermestidae Hope, 1840 | Carpet beetles | 111 | Species | Taxom |
| Deuterophlebiidae Edwards, 1922 | Mountain midges | 1 | Species | Taxom |
| Diapriidae Latreille, 1796 | Diapriid wasps | 2 | Species | Taxom |
| Dictyodipteridae Rohdendorf, 1961 | | 1 | Species | Taxom |
| Diprionidae Rohwer, 1911 | Conifer sawflies | 4 | Species | Taxom |
| Dipseudopsidae Ulmer, 1904 | | 1 | Species | Taxom |
| Dixidae Schiner, 1868 | Dixid Midges | 1 | Species | Taxom |
| Dolichopodidae Latreille, 1809 | Long legged flies | 33 | Species | Taxom |
| Drepanidae Meyrick, 1895 | Drepanids | 2 | Species | Taxom |
| Drosophilidae Rondani, 1856 | Fruit flies | 11 | Species | Taxom |
| Dryinidae Haliday, 1840 | Dryinid wasps | 0 | Species | Taxom |
| Dryopidae Billberg, 1820 | Long toed water beetle | 10 | Species | Taxom |
| Dysoneuridae Sukatsheva, 1968 | | 1 | Species | Taxom |
| Dytiscidae Leach, 1815 | Diving beetles | 36 | Species | Taxom |
| Elachistidae Bruand, 1851 | Elachistid moths | 42 | Species | Taxom |
| Elateridae Leach, 1815 | Click Beetle | 319 | Species | Taxom |
| Elliidae Krzeminska, ..., 1993 | | 1 | Species | Taxom |
| Elmidae Curtis, 1830 | Drive beetles | 6 | Species | Taxom |
| Empididae Latreille, 1809 | Balloon flies | 35 | Species | Taxom |
| Encyrtidae Walker, 1837 | Encyrtid wasps | 199 | Species | Taxom |
| Endomychidae Leach, 1815 | False Ladybirds | 1 | Species | Taxom |
| Eolepidopterigidae Rasnitsyn, 1983 | | 1 | Species | Taxom |
| Eomeropidae Cockerell, 1909 | | 2 | Species | Taxom |
| Eomyiidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Eopolyneuridae Rohdendorf, 1962 | | 2 | Species | Taxom |
| Eostratiomyiidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Epermeniidae Spuler, 1910 | Epermeniid moths | 17 | Species | Taxom |
| Ephialtitidae Handlirsch, 1906 | | 46 | Species | Taxom |
| Ephydridae Zetterstedt, 1837 | Brine flies | 11 | Species | Taxom |
| Erebidae Leach, 1815 | Erebid Moths | 253 | Species | Taxom |
| Eremochaetidae Ussatchov, 1968 | | 3 | Species | Taxom |
| Eriocraniidae Rebel, 1901 | Eriocraniid moths | 2 | Species | Taxom |
| Erotylidae Latreille, 1802 | Pleasing Fungus Beetle | 2 | Species | Taxom |
| Eucharitidae Latreille, 1809 | Eucharitid wasp | 1 | Species | Taxom |
| Eucnemidae Eschscholtz, 1829 | Click Beetles | 0 | Species | Taxom |
| Eulophidae Westwood, 1829 | Eulophid wasps | 69 | Species | Taxom |
| Eupelmidae Walker, 1833 | Eupelmid wasps | 8 | Species | Taxom |
| Eurytomidae Walker, 1832 | Eurytomid wasps | 57 | Species | Taxom |
| Evaniidae Latreille, 1802 | Ensign wasp | 3 | Species | Taxom |
| Figitidae Thomson, 1862 | Figitid wasps | 0 | Species | Taxom |
| Formicidae Latreille, 1809 | Ants | 293 | Species | Taxom |
| Fungivoritidae Rohdendorf, 1957 | | 6 | Species | Taxom |
| Gelechiidae Stainton, 1854 | Gelechiid moths | 89 | Species | Taxom |
| Geometridae Leach, 1815 | Cankerworm moths | 569 | Species | Taxom |
| Geotrupidae Latreille, 1802 | Dor beetles | 103 | Species | Taxom |
| Gigasiricidae (Rasnitsyn, 1968) | | 1 | Species | Taxom |
| Glaphyridae MacLeay, 1819 | Bumble bee scarab beetle | 7 | Species | Taxom |
| Glaresidae Kolbe, 1905 | Enigmatic scarab beetle | 3 | Species | Taxom |
| Glossosomatidae Wallengren, 1891 | Little Black Caddisflies | 7 | Species | Taxom |
| Glyphipterigidae Stainton, 1854 | Glyphipterigid moths | 1 | Species | Taxom |
| Gnomuscidae Shcherbakov, 1995 | | 2 | Species | Taxom |
| Gracillariidae Stainton, 1854 | Blotch leaf miner moths | 86 | Species | Taxom |
| Gyrinidae Latreille, 1802 | Whirligig beetle | 10 | Species | Taxom |
| Halictidae Thomson, 1869 | Flower bees | 80 | Species | Taxom |
| Haliplidae Aubé, 1836 | Crawling Water Beetle | 1 | Species | Taxom |
| Heleomyzidae (Westwood, 1840) | Heleomyzid flies | 10 | Species | Taxom |
| Heloridae Förster, 1856 | Helorid wasps | 3 | Species | Taxom |
| Hennigmatidae Shcherbakov, 1995 | | 1 | Species | Taxom |
| Hepialidae Stephens, 1829 | Ghost Moths | 9 | Species | Taxom |
| Hesperiidae Latreille, 1809 | Skipper | 52 | Species | Taxom |
| Heteroceridae MacLeay, 1825 | Mud beetles | 19 | Species | Taxom |
| Hippoboscidae Samouelle, 1819 | Keds | 11 | Species | Taxom |
| Histeridae Gyllenhal, 1808 | Clown beetle | 186 | Species | Taxom |
| Hybosoridae Erichson, 1847 | Pill scarab beetles | 7 | Species | Taxom |
| Hybotidae Meigen, 1820 | Dance flies | 9 | Species | Taxom |
| Hydraenidae Mulsant, 1844 | Cascade Beetles | 41 | Species | Taxom |
| Hydrobiosidae Ulmer, 1905 | | 18 | Species | Taxom |
| Hydrophilidae Latreille, 1802 | Silver Water Beetles | 107 | Species | Taxom |
| Hydropsychidae Curtis, 1835 | Net Spinning caddisflies | 7 | Species | Taxom |
| Hydroptilidae Stephens, 1836 | Micro caddisflies | 8 | Species | Taxom |
| Hyperpolyneuridae Rohdendorf, 1961 | | 1 | Species | Taxom |
| Hystrichopsyllidae Tiraboschi, 1904 | Insectivore fleas | 2 | Species | Taxom |
| Ichneumonidae Latreille, 1802 | Ichneumon flies | 24 | Species | Taxom |
| Ideliidae (Zalessky, 1929) | | 11 | Species | Taxom |
| Ischnopsyllidae Wahlgren, 1907 | Bat fleas | 4 | Species | Taxom |
| Kaltanidae Martynova, 1958 | | 4 | Species | Taxom |
| Karatavitidae Rasnitsyn, 1963 | | 3 | Species | Taxom |
| Keroplatidae Rondani, 1856 | Fungus gnats | 1 | Species | Taxom |
| Kovalevisargidae Mostovski, 1997 | | 2 | Species | Taxom |
| Lampyridae Latreille, 1817 | Fireflies | 3 | Species | Taxom |
| Lasiocampidae Harris, 1841 | Eggar Moths | 16 | Species | Taxom |
| Lasiosynidae Kirejtshuk, ..., 2010 | | 3 | Species | Taxom |
| Latridiidae Erichson, 1842 | Minute brown scavenger beetle | 2 | Species | Taxom |
| Lauxaniidae Macquart, 1835 | Beach flies | 22 | Species | Taxom |
| Lecithoceridae Le Marchand, 1947 | Long-horned moths | 1 | Species | Taxom |
| Leiodidae Fleming, 1821 | Round fungus beetles | 50 | Species | Taxom |
| Lemoniidae Hampson, 1918 | Autumn Silkworm Moths | 2 | Species | Taxom |
| Lepidostomatidae Ulmer, 1903 | Bizarre Caddisflies | 17 | Species | Taxom |
| Leptoceridae Leach, 1815 | Long Horned caddisflies | 8 | Species | Taxom |
| Leptopsyllidae Rothschild &..., 1915 | Bird fleas | 34 | Species | Taxom |
| Limacodidae Duponchel, 1845 | Cup moths | 1 | Species | Taxom |
| Limnephilidae Kolenati, 1848 | Northern caddisflies | 7 | Species | Taxom |
| Limnichidae Erichson, 1846 | Minute marsh loving beetle | 4 | Species | Taxom |
| Limoniidae (Speiser, 1909) | Craneflies | 48 | Species | Taxom |
| Liopteridae Ashmead, 1895 | Liopterid wasps | 1 | Species | Taxom |
| Lucanidae Latreille, 1804 | Stag Beetle | 10 | Species | Taxom |
| Lycaenidae Leach, 1815 | Blue butterflies | 204 | Species | Taxom |
| Lycidae Laporte, 1836 | Lycid beetles | 1 | Species | Taxom |
| Lyonetiidae Stainton, 1854 | Lyonet Moths | 8 | Species | Taxom |
| Megachilidae Schenk, 1860 | And Resin Bees | 57 | Species | Taxom |
| Megalodontesidae Konow, 1897 | | 6 | Species | Taxom |
| Megalyridae Schletterer, 1889 | Megalyrid wasps | 33 | Species | Taxom |
| Megaspilidae Ashmead, 1893 | Megaspilid wasps | 0 | Species | Taxom |
| Melandryidae Leach, 1815 | False Darkling Beetle | 2 | Species | Taxom |
| Melittidae Schenk, 1860 | Melittid bees | 6 | Species | Taxom |
| Meloidae Gyllenhal, 1810 | Blister Beetle | 151 | Species | Taxom |
| Melolonthidae (Leach, 1817) | Chafers | 9 | Species | Taxom |
| Melyridae Leach, 1815 | Malachite Beetles | 9 | Species | Taxom |
| Mengenillidae Kinzelbach, 1970 | | 1 | Species | Taxom |
| Mesophantasmatidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Mesopsychidae Tillyard, 1917 | | 9 | Species | Taxom |
| Mesoserphidae Kozlov, 1970 | | 21 | Species | Taxom |
| Micropezidae Illiger, 1798 | Stilt Flies | 1 | Species | Taxom |
| Microphoridae (Chvala, 1983) | | 1 | Species | Taxom |
| Micropterigidae Herrich-Schä..., 1855 | Mandibulate Archaic Moths | 2 | Species | Taxom |
| Milichiidae Schiner, 1862 | Filth flies | 2 | Species | Taxom |
| Monotomidae Laporte, 1840 | Minute Clubbed Beetles | 2 | Species | Taxom |
| Mordellidae Latreille, 1802 | Pintail beetles | 42 | Species | Taxom |
| Muscidae Latreille, 1802 | Face flies | 18 | Species | Taxom |
| Musidoromimidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Mutillidae André, 1907 | Cow ant | 2 | Species | Taxom |
| Mycetophagidae Leach, 1815 | Hairy fungus beetle | 1 | Species | Taxom |
| Mycetophilidae Newman, 1834 | Fungus Gnat | 37 | Species | Taxom |
| Mymaridae Haliday, 1833 | Fairflies | 3 | Species | Taxom |
| Nadipteridae Lukashevich, 1995 | | 3 | Species | Taxom |
| Necrotauliidae Handlirsch, 1906 | | 5 | Species | Taxom |
| Nemestrinidae Macquart, 1834 | Tangle-veined flies | 42 | Species | Taxom |
| Nemonychidae Bedel, 1882 | Nemonychid weevils | 84 | Species | Taxom |
| Nepticulidae Stainton, 1854 | Leaf miners | 27 | Species | Taxom |
| Nitidulidae Latreille, 1802 | Nitidules | 2 | Species | Taxom |
| Noctuidae Latreille, 1809 | Armyworms | 344 | Species | Taxom |
| Nolidae Hampson, 1894 | Hatted Caterpillars | 5 | Species | Taxom |
| Notodontidae Stephens, 1829 | Bag Shelter Moths | 17 | Species | Taxom |
| Nymphalidae Rafinesque, 1815 | Admirals | 285 | Species | Taxom |
| Obrieniidae Zherikhin an..., 1994 | | 10 | Species | Taxom |
| Ochodaeidae Mulsant & Rey, 1870 | Sand-loving scarab beetle | 4 | Species | Taxom |
| Odiniidae Hendel, 1920 | Odiniid flies | 4 | Species | Taxom |
| Oecophoridae Bruand, 1851 | Concealer Moths | 3 | Species | Taxom |
| Oedemeridae Latreille, 1810 | False Blister Beetle | 18 | Species | Taxom |
| Oestridae Leach, 1815 | Bot flies | 3 | Species | Taxom |
| Ommatidae Sharp & Muir, 1912 | | 59 | Species | Taxom |
| Opomyzidae (Fallen, 1820) | Opomyzid flies | 2 | Species | Taxom |
| Opostegidae Meyrick, 1893 | Opostegid moths | 10 | Species | Taxom |
| Ormyridae Förster, 1856 | Armyrids | 7 | Species | Taxom |
| Orthophlebiidae Handlirsch, 1906 | | 44 | Species | Taxom |
| Orussidae Newman, 1834 | Orussid wasps | 1 | Species | Taxom |
| Otitidae (Macquart, 1835) | Picture-winged flies | 38 | Species | Taxom |
| Pachyneuridae Schiner, 1864 | Dark-winged fungus gnats | 1 | Species | Taxom |
| Palaeophoridae Rohdendorf, 1951 | | 1 | Species | Taxom |
| Pamphiliidae Cameron, 1890 | Leaf-rolling sawflies | 1 | Species | Taxom |
| Panorpidae Linnaeus, 1758 | Common scorpionflies | 1 | Species | Taxom |
| Papilionidae Latreille, 1802 | Apollos | 36 | Species | Taxom |
| Parachoristidae Tillyard, 1937 | | 4 | Species | Taxom |
| Parandrexidae Kirejtshuk, 1994 | | 3 | Species | Taxom |
| Parapamphiliidae Rasnitsyn, 1968 | | 1 | Species | Taxom |
| Paraxymyiidae Rohdendorf, 1946 | Paxylommatid wasps | 2 | Species | Taxom |
| Paroryssidae Martynov, 1925 | | 9 | Species | Taxom |
| Pediciidae Osten Sacken, 1860 | Hairy-Eyed Crane Flies | 2 | Species | Taxom |
| Perilampidae Latreille, 1809 | Perilampid waps | 3 | Species | Taxom |
| Permochoristidae Tillyard, 1918 | | 22 | Species | Taxom |
| Permosialidae Martynov, 1928 | | 3 | Species | Taxom |
| Philopotamidae Stephens, 1829 | Finger Net caddisflies | 4 | Species | Taxom |
| Phoridae Curtis, 1833 | Coffin Flies | 5 | Species | Taxom |
| Pieridae Duponchel, 1835 | Brimstones | 73 | Species | Taxom |
| Pipunculidae Walker, 1834 | Big headed flies | 51 | Species | Taxom |
| Platygastridae Haliday, 1833 | Platygastrid wasps | 7 | Species | Taxom |
| Platystomatidae Schiner, 1862 | Picture-winged flies | 10 | Species | Taxom |
| Pleciodictyidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Pleciofungivoridae Rohdendorf, 1946 | | 30 | Species | Taxom |
| Pleciomimidae Rodendorf, 1949 | | 15 | Species | Taxom |
| Plutellidae Guenée, 1845 | Diamond-back moths | 2 | Species | Taxom |
| Polycentropodidae Ulmer, 1903 | Tube Maker Caddisflies | 2 | Species | Taxom |
| Pompilidae Latreille, 1805 | Pompilid wasps | 250 | Species | Taxom |
| Praeaulacidae Rasnitsyn, 1972 | | 27 | Species | Taxom |
| Praelateriidae Dolin, 1973 | | 1 | Species | Taxom |
| Praesiricidae Rasnitsyn, 1968 | | 1 | Species | Taxom |
| Procramptonomyiidae Kovalev, 1985 | | 1 | Species | Taxom |
| Proctotrupidae Latreille, 1802 | Proctotrupid wasps | 1 | Species | Taxom |
| Prorhyacophilidae Riek, 1955 | | 1 | Species | Taxom |
| Protendipedidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Protoligoneuridae Rohdendorf, 1962 | | 6 | Species | Taxom |
| Protomeropidae Tillyard, 1926 | | 3 | Species | Taxom |
| Protomphralidae Rohdendorf, 1957 | | 1 | Species | Taxom |
| Protopleciidae Rohdendorf, 1946 | | 12 | Species | Taxom |
| Protorhyphidae Handlirsch, 1906 | | 4 | Species | Taxom |
| Pseudopolycentropodidae Handlirsch, 1925 | | 2 | Species | Taxom |
| Pseudosiricidae Handlirsch, 1908 | | 1 | Species | Taxom |
| Psilidae Macquart, 1835 | Carrot flies | 2 | Species | Taxom |
| Psychidae Boisduval, 1828 | Bagmoths | 2 | Species | Taxom |
| Psychodidae Newman, 1834 | Drain flies | 14 | Species | Taxom |
| Psychomyiidae Walker, 1852 | Net Tube Caddisflies | 3 | Species | Taxom |
| Pteromalidae Dalman, 1820 | Pteromalid wasps | 62 | Species | Taxom |
| Pterophoridae Zeller, 1841 | Plume Moths | 152 | Species | Taxom |
| Ptiliidae Heer, 1843 | Feather-wing beetles | 6 | Species | Taxom |
| Ptinidae Latreille, 1802 | Death-watch and Spider Beetles | 10 | Species | Taxom |
| Ptychopteridae Osten Sacken, 1862 | Phantom crane flies | 20 | Species | Taxom |
| Pulicidae Billberg, 1820 | Cat fleas | 16 | Species | Taxom |
| Pygiopsyllidae Wagner, 1939 | | 1 | Species | Taxom |
| Pyralidae Latreille, 1802 | Flour Moths | 121 | Species | Taxom |
| Rhagionemestriidae Ussatchov, 1968 | | 3 | Species | Taxom |
| Rhagionidae Latreille, 1802 | Snipe flies | 13 | Species | Taxom |
| Rhinophoridae Robineau-Des..., 1863 | Woodlouse flies | 1 | Species | Taxom |
| Rhipiceridae Latreille, 1834 | Cedar beetles | 1 | Species | Taxom |
| Rhopalopsyllidae Oudemans, 1909 | Marsupial fleas | 1 | Species | Taxom |
| Rhyacophilidae Stephens, 1836 | Free-living Caddisflies | 2 | Species | Taxom |
| Riodinidae Grote, 1895 | Metalmark Butterflies | 9 | Species | Taxom |
| Ripiphoridae Gemminger & ..., 1870 | Rhipiphoridae | 2 | Species | Taxom |
| Rutelidae (MacLeay, 1819) | | 7 | Species | Taxom |
| Sarcophagidae Macquart, 1834 | Flesh flies | 162 | Species | Taxom |
| Saturniidae Boisduval, 1837 | And Giant Silk Moths | 3 | Species | Taxom |
| Scaphocoridae Popov, 1968 | | 1 | Species | Taxom |
| Scarabaeidae Latreille, 1802 | Dung beetles | 624 | Species | Taxom |
| Scathophagidae Robineau-Des..., 1830 | Dung flies | 7 | Species | Taxom |
| Scatopsidae Newman, 1834 | Dung midges | 5 | Species | Taxom |
| Scelionidae Haliday, 1839 | Scelionid wasps | 86 | Species | Taxom |
| Scenopinidae Burmeister, 1835 | Window Flies | 11 | Species | Taxom |
| Schizophoridae Ponomarenko, 1968 | | 31 | Species | Taxom |
| Sciaridae Billberg, 1820 | Black fungus gnats | 7 | Species | Taxom |
| Sciomyzidae Fallen, 1820 | Marsh Flies | 8 | Species | Taxom |
| Scirtidae Fleming, 1821 | Marsh Beetle | 1 | Species | Taxom |
| Scolebythidae Evans, 1963 | Scolebythid wasps | 1 | Species | Taxom |
| Scoliidae Leach, 1815 | Mammoth wasps | 5 | Species | Taxom |
| Scraptiidae Mulsant, 1856 | Antlike leaf beetles | 6 | Species | Taxom |
| Scydmaenidae (Leach, 1815) | Ant-like stone beetles | 9 | Species | Taxom |
| Sepsidae Walker, 1833 | Black scavenger flies | 7 | Species | Taxom |
| Sepulcidae Rasnitsyn, 1968 | | 3 | Species | Taxom |
| Serphitidae Brues, 1937 | | 1 | Species | Taxom |
| Sesiidae Boisduval, 1828 | Clear Wings | 21 | Species | Taxom |
| Signiphoridae Howard, 1894 | Signiphorid waps | 1 | Species | Taxom |
| Silphidae Latreille, 1807 | Burying And Carrion Beetles | 44 | Species | Taxom |
| Silvanidae Kirby, 1837 | Flat bark beetles | 1 | Species | Taxom |
| Simuliidae Newman, 1834 | Black flies | 13 | Species | Taxom |
| Siricidae Billberg, 1820 | Horntail | 11 | Species | Taxom |
| Sphaeroceridae Macquart, 1835 | Dung flies | 2 | Species | Taxom |
| Sphecidae Latreille, 1802 | Digger & Sand wasps | 12 | Species | Taxom |
| Sphingidae Latreille, 1802 | Hawk Moths | 35 | Species | Taxom |
| Staphylinidae Lameere, 1900 | Rove beetles | 971 | Species | Taxom |
| Stenopsychidae Martynov, 1924 | | 1 | Species | Taxom |
| Stratiomyidae Latreille, 1802 | Soldier flies | 51 | Species | Taxom |
| Stylopidae Kirby, 1813 | Strepsiptera | 2 | Species | Taxom |
| Syrphidae Latreille, 1802 | Drone flies | 219 | Species | Taxom |
| Tabanidae Latreille, 1802 | Breeze flies | 45 | Species | Taxom |
| Tachinidae (Robineau-Des..., 1830) | Bristle Flies | 48 | Species | Taxom |
| Taldycupedidae Rohdendorf, 1961 | | 1 | Species | Taxom |
| Tanyderidae Alexander, 1919 | Primitive crane flies | 5 | Species | Taxom |
| Tanyderophryneidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Tenebrionidae Latreille, 1802 | Darkling Beetle | 58 | Species | Taxom |
| Tenthredinidae Latreille, 1804 | Common sawflies | 55 | Species | Taxom |
| Tephritidae Newman, 1834 | Fruit flies | 93 | Species | Taxom |
| Tethinidae (Hendel, 1916) | Tethinid flies | 1 | Species | Taxom |
| Tetracampidae Förster, 1856 | Tetracampid wasps | 2 | Species | Taxom |
| Tetratomidae Billberg, 1820 | Polypore fungus beetle | 1 | Species | Taxom |
| Thaumatomeropidae Willmann, 1978 | | 5 | Species | Taxom |
| Therevidae Newman, 1834 | Stiletto flies | 42 | Species | Taxom |
| Throscidae Laporte, 1840 | False metallic wood-boring beetles | 1 | Species | Taxom |
| Tineidae Latreille, 1810 | & Allies | 17 | Species | Taxom |
| Tipulidae Latreille, 1802 | Crane Flies | 294 | Species | Taxom |
| Tipulodictyidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Tipulopleciidae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Tischeriidae Spuler, 1898 | Lyonetiid moths | 1 | Species | Taxom |
| Tortricidae Latreille, 1803 | Bell Moths | 136 | Species | Taxom |
| Torymidae Walker, 1833 | Apple seed chalcids | 18 | Species | Taxom |
| Trachypachidae C. G. Thomson, 1857 | False ground beetle | 12 | Species | Taxom |
| Triaplidae Ponomarenko, 1977 | Extinct family | 2 | Species | Taxom |
| Trichoceridae Rondani, 1841 | Winter Crane Flies | 8 | Species | Taxom |
| Trichogrammatidae Haliday, 1851 | Trichogrammatid wasps | 9 | Species | Taxom |
| Tricoleidae (Ponomarenko, 1969) | | 5 | Species | Taxom |
| Trogidae (MacLeay, 1819) | Gnawer beetles | 7 | Species | Taxom |
| Trogossitidae Latreille, 1802 | Bark gnawing beetle | 6 | Species | Taxom |
| Ulidiidae Macquart, 1835 | Picture-winged Flies | 1 | Species | Taxom |
| Uraniidae Blanchard, 1845 | Swallowtail Moths | 4 | Species | Taxom |
| Vermipsyllidae Wagner, 1889 | Carnivore fleas | 8 | Species | Taxom |
| Vespidae Leach, 1815 | And Allies | 125 | Species | Taxom |
| Vladipteridae Shcherbakov, 1995 | | 4 | Species | Taxom |
| Xyelidae Newman, 1835 | Sawfly | 51 | Species | Taxom |
| Xyelotomidae Rasnitsyn, 1968 | | 3 | Species | Taxom |
| Xyelydidae Rasnitsyn, 1968 | | 12 | Species | Taxom |
| Xylomyidae Verrall, 1901 | Wood soldier flies | 2 | Species | Taxom |
| Xylophagidae Fallen, 1810 | Awl-flies | 1 | Species | Taxom |
| Yponomeutidae Stephens, 1829 | Ermine Moths | 2 | Species | Taxom |
| Ypsolophidae Guenée, 1845 | Ypsolophid Moths | 5 | Species | Taxom |
| Zopheridae Solier, 1834 | Cylindrical bark beetles | 2 | Species | Taxom |
| Zygaenidae Latreille, 1809 | Burnet Forester | 17 | Species | Taxom |