| Acrididae MacLeay, 1819 | Grasshoppers and locusts | 5 | Species | Taxom |
| Ademosynidae Ponomarenko, 1968 | | 5 | Species | Taxom |
| Aerophasmidae Martynov, 1928 | | 1 | Species | Taxom |
| Aeschnidiidae Needham, 1903 | Small darner | 9 | Species | Taxom |
| Aeshnidae Rambur, 1842 | Darners | 5 | Species | Taxom |
| Aktassiidae Pritykina, 1968 | | 5 | Species | Taxom |
| Anaxyelidae Martynov, 1925 | Anaxyelids | 8 | Species | Taxom |
| Anisopodidae Knab, 1912 | Window Midges | 6 | Species | Taxom |
| Antefungivoridae Rohdendorf, 1938 | | 5 | Species | Taxom |
| Anthribidae Billberg, 1820 | Fungus Weevil | 4 | Species | Taxom |
| Archegocimicidae Handlirsch, 1906 | | 6 | Species | Taxom |
| Archijassidae Becker-Migdi..., 1962 | | 3 | Species | Taxom |
| Archimylacridae Handlirsch, 1906 | | 2 | Species | Taxom |
| Archipsyllidae Handlirsch, 1908 | | 1 | Species | Taxom |
| Archisargidae Rohdendorf, 1962 | | 2 | Species | Taxom |
| Archizelmiridae Rohdendorf, 1962 | | 1 | Species | Taxom |
| Atelestidae Hennig, 1970 | | 9 | Species | Taxom |
| Athericidae Stuckenberg, 1973 | Athericid flies | 6 | Species | Taxom |
| Axymyiidae Rohdendorf, 1946 | Axymyiidae flies | 1 | Species | Taxom |
| Baetidae Leach, 1815 | Mayflies | 3 | Species | Taxom |
| Baissoferidae Sukatsheva, 1968 | | 1 | Species | Taxom |
| Baissogryllidae Gorochov, 1985 | | 24 | Species | Taxom |
| Bajanzhargalanidae Storozhenko, 1992 | | 1 | Species | Taxom |
| Baleyopterygidae N.D. Siniche..., 1985 | | 8 | Species | Taxom |
| Belostomatidae Leach, 1815 | Alligator ticks | 6 | Species | Taxom |
| Berothidae Handlirsch, 1906 | Beaded lacewing | 8 | Species | Taxom |
| Bethylonymidae Rasnitsyn, 1975 | | 1 | Species | Taxom |
| Bibionidae Fleming, 1821 | Bibionid flies | 3 | Species | Taxom |
| Bintoniellidae Handlirsch, 1937 | | 10 | Species | Taxom |
| Bittacidae Handlirsch, 1906 | Hanging scorpionflies | 6 | Species | Taxom |
| Blattidae Stephens, 1829 | American cockroaches | 4 | Species | Taxom |
| Blattocoleidae Zeuner, 1933 | | 2 | Species | Taxom |
| Blattulidae Vishnyokova, 1982 | | 7 | Species | Taxom |
| Boholdoyidae Kovalev, 1985 | | 2 | Species | Taxom |
| Boreidae Latreille, 1816 | Snow fleas | 1 | Species | Taxom |
| Brachycleistogastridae (Kovalev, 1994) | | 4 | Species | Taxom |
| Brongniartiellidae Martynova, 1949 | | 3 | Species | Taxom |
| Buprestidae Leach, 1815 | Flat-headed wood-borers | 26 | Species | Taxom |
| Byrrhidae Latreille, 1804 | Moss beetles | 4 | Species | Taxom |
| Caloblattinidae Vršanský & A..., 2000 | | 1 | Species | Taxom |
| Calopterygidae Selys, 1850 | Broad-winged damselflies | 1 | Species | Taxom |
| Campterophlebiidae Handlirsch, 1920 | | 3 | Species | Taxom |
| Capniidae Klapálek, 1905 | Capniid winter stoneflies | 2 | Species | Taxom |
| Capsidae (Hunt, 1979) | | 1 | Species | Taxom |
| Carabidae Latreille, 1802 | Carabid beetles | 82 | Species | Taxom |
| Caridae Thompson, 1992 | | 8 | Species | Taxom |
| Cecidomyiidae Newman, 1834 | Forest Midges | 9 | Species | Taxom |
| Cerambycidae Latreille, 1802 | Long Horn beetles | 13 | Species | Taxom |
| Cercopidae Leach, 1815 | Froghopper | 2 | Species | Taxom |
| Cerophytidae Latreille, 1834 | Cerophytid beetles | 1 | Species | Taxom |
| Chaoboridae Newman, 1834 | Phantom midge | 13 | Species | Taxom |
| Chironomidae Erichson, 1842 | Chironomids | 48 | Species | Taxom |
| Chloroperlidae Okamoto, 1912 | Green stoneflies | 4 | Species | Taxom |
| Chresmodidae Haase, 1890 | | 1 | Species | Taxom |
| Chrysomelidae Latreille, 1802 | Casebearers | 17 | Species | Taxom |
| Chrysopidae Schneider, 1851 | And Green Lacewings | 1 | Species | Taxom |
| Cicadidae Westwood, 1840 | Cicada | 1 | Species | Taxom |
| Cicadomorphidae Handlirsch, 1906 | Giant cicadas | 2 | Species | Taxom |
| Cimbrophlebiidae Willmann, 1977 | Hangingfly | 1 | Species | Taxom |
| Cixiidae Spinola, 1839 | Cixid planthoppers | 2 | Species | Taxom |
| Cleridae Latreille, 1802 | Checkered Beetle | 2 | Species | Taxom |
| Coenagrionidae Kirby, 1890 | Narrow-winged damselflies | 6 | Species | Taxom |
| Coptoclavidae Ponomarenko, 1961 | Extinct family | 13 | Species | Taxom |
| Cordulegasteridae | | 3 | Species | Taxom |
| Corixidae Leach, 1815 | Lesser Water-Boatman | 7 | Species | Taxom |
| Corydalidae Burmeister, 1839 | Dobsonflies | 4 | Species | Taxom |
| Crambidae Latreille, 1810 | Crambid Snout Moths | 5 | Species | Taxom |
| Culicidae Meigen, 1818 | Mosquito | 1 | Species | Taxom |
| Cupedidae Laporte, 1836 | Cupedids | 22 | Species | Taxom |
| Curculionidae Latreille, 1802 | Ambrosia beetles | 28 | Species | Taxom |
| Cymatophlebiidae Handlirsch, 1906 | | 6 | Species | Taxom |
| Dermapteridae Vishniakova, 1980 | | 4 | Species | Taxom |
| Dinopanorpidae Carpenter, 1972 | | 1 | Species | Taxom |
| Dryinidae Haliday, 1840 | Dryinid wasps | 18 | Species | Taxom |
| Dysoneuridae Sukatsheva, 1968 | | 3 | Species | Taxom |
| Dytiscidae Leach, 1815 | Diving beetles | 31 | Species | Taxom |
| Elateridae Leach, 1815 | Click Beetle | 120 | Species | Taxom |
| Elcanidae Handlirsch, 1906 | | 10 | Species | Taxom |
| Eoichneumonidae (Jell & Duncan, 1986) | | 1 | Species | Taxom |
| Eolepidopterigidae Rasnitsyn, 1983 | | 3 | Species | Taxom |
| Ephemerellidae (Klapálek, 1909) | Blue-Winged Olive Ephemerellidae | 1 | Species | Taxom |
| Ephemeridae Leach, 1817 | Burrowing mayflies | 2 | Species | Taxom |
| Ephialtitidae Handlirsch, 1906 | | 37 | Species | Taxom |
| Erebidae Leach, 1815 | Erebid Moths | 9 | Species | Taxom |
| Erichschmidtiidae Bechly, 1996 | | 0 | Species | Taxom |
| Eriocraniidae Rebel, 1901 | Eriocraniid moths | 0 | Species | Taxom |
| Eucinetidae Lacordaire, 1857 | Plate-thigh beetle | 5 | Species | Taxom |
| Eucnemidae Eschscholtz, 1829 | Click Beetles | 3 | Species | Taxom |
| Eumorbaeschnidae Bechly, 1996 | | 2 | Species | Taxom |
| Euphaeidae Jacobson & B..., 1905 | Gossamerwings | 2 | Species | Taxom |
| Forficulidae Stephens, 1829 | Common Earwig | 2 | Species | Taxom |
| Formicidae Latreille, 1809 | Ants | 116 | Species | Taxom |
| Fulgoridiidae Handlirsch, 1939 | | 1 | Species | Taxom |
| Fungivoritidae Rohdendorf, 1957 | | 0 | Species | Taxom |
| Geinitziidae Handlirsch, 1906 | | 1 | Species | Taxom |
| Genaphididae Handlirsch, 1907 | | 1 | Species | Taxom |
| Geometridae Leach, 1815 | Cankerworm moths | 32 | Species | Taxom |
| Geraridae Scudder, 1885 | | 1 | Species | Taxom |
| Glaphyridae MacLeay, 1819 | Bumble bee scarab beetle | 8 | Species | Taxom |
| Glaresidae Kolbe, 1905 | Enigmatic scarab beetle | 2 | Species | Taxom |
| Glossosomatidae Wallengren, 1891 | Little Black Caddisflies | 2 | Species | Taxom |
| Gomphidae Rambur, 1842 | Club-tailed dragonflies | 4 | Species | Taxom |
| Grammolingiidae Ren, 2002 | | 2 | Species | Taxom |
| Gripopterygidae Enderlein, 1909 | | 1 | Species | Taxom |
| Gryllacrididae Blanchard, 1845 | Camel Crickets | 1 | Species | Taxom |
| Gryllidae Bolivar, 1878 | Crickets | 11 | Species | Taxom |
| Gyrinidae Latreille, 1802 | Whirligig beetle | 3 | Species | Taxom |
| Haglidae Handlirsch, 1906 | Hump-winged cricket | 68 | Species | Taxom |
| Helicopsychidae Ulmer, 1912 | Snail Case caddisflies | 2 | Species | Taxom |
| Hemerobiidae Latreille, 1802 | Brown Lacewing | 1 | Species | Taxom |
| Hemiphlebiidae Fraser, 1960 | Ancient greenling | 1 | Species | Taxom |
| Hexagenitidae Lameere, 1917 | | 6 | Species | Taxom |
| Histeridae Gyllenhal, 1808 | Clown beetle | 7 | Species | Taxom |
| Hybosoridae Erichson, 1847 | Pill scarab beetles | 6 | Species | Taxom |
| Hybotidae Meigen, 1820 | Dance flies | 1 | Species | Taxom |
| Hydraenidae Mulsant, 1844 | Cascade Beetles | 4 | Species | Taxom |
| Hydrobiosidae Ulmer, 1905 | | 4 | Species | Taxom |
| Hydrophilidae Latreille, 1802 | Silver Water Beetles | 29 | Species | Taxom |
| Hylicellidae Evans, 1956 | | 0 | Species | Taxom |
| Isophlebiidae Handlirsch, 1908 | | 4 | Species | Taxom |
| Jacobsoniidae Heller, 1926 | Jacobson's beetles | 2 | Species | Taxom |
| Juracorduliidae Bechly & Ueda, 2002 | | 1 | Species | Taxom |
| Juramantidae Vrsansky, 2002 | | 1 | Species | Taxom |
| Jurapriidae Rasnitsyn, 1983 | | 1 | Species | Taxom |
| Jurodidae Ponomarenko, 1985 | Jurodids | 3 | Species | Taxom |
| Kalligrammatidae Handlirsch, 1906 | | 17 | Species | Taxom |
| Karabasiidae Popov, 1985 | | 2 | Species | Taxom |
| Lasiosynidae Kirejtshuk, ..., 2010 | | 10 | Species | Taxom |
| Lauxaniidae Macquart, 1835 | Beach flies | 1 | Species | Taxom |
| Leiodidae Fleming, 1821 | Round fungus beetles | 8 | Species | Taxom |
| Lepismatidae Latreille, 1802 | Lepismatid Fishmoths | 3 | Species | Taxom |
| Leptoceridae Leach, 1815 | Long Horned caddisflies | 1 | Species | Taxom |
| Leptophlebiidae Banks, 1900 | Leptophlebiids | 9 | Species | Taxom |
| Leuctridae Klapálek, 1905 | Needle Or Willow Stoneflies | 1 | Species | Taxom |
| Liadytidae Ponomarenko, 1977 | | 4 | Species | Taxom |
| Liassophlebiidae Tillyard, 1925 | Damsel-dragonflies | 1 | Species | Taxom |
| Liberiblattinidae Vrsansky, 2002 | | 1 | Species | Taxom |
| Limnephilidae Kolenati, 1848 | Northern caddisflies | 8 | Species | Taxom |
| Limoniidae (Speiser, 1909) | Craneflies | 20 | Species | Taxom |
| Lithoscarabaeidae Nikolajev, 1992 | | 1 | Species | Taxom |
| Locustopsidae Handlirsch, 1906 | | 6 | Species | Taxom |
| Lophioneuridae Tillyard, 1921 | | 2 | Species | Taxom |
| Lucanidae Latreille, 1804 | Stag Beetle | 14 | Species | Taxom |
| Megachilidae Schenk, 1860 | And Resin Bees | 3 | Species | Taxom |
| Megalyridae Schletterer, 1889 | Megalyrid wasps | 10 | Species | Taxom |
| Meloidae Gyllenhal, 1810 | Blister Beetle | 1 | Species | Taxom |
| Membracidae Germar, 1821 | Horned Treehoppers | 2 | Species | Taxom |
| Mesephemeridae Lameere, 1917 | | 3 | Species | Taxom |
| Mesoblattinidae Handlirsch, 1906 | | 5 | Species | Taxom |
| Mesochrysopidae Handlirsch, 1906 | | 2 | Species | Taxom |
| Mesocinetidae Kirejtshuk &..., 2010 | | 4 | Species | Taxom |
| Mesopsychidae Tillyard, 1917 | | 1 | Species | Taxom |
| Mesoraphidiidae Martynov, 1925 | | 26 | Species | Taxom |
| Mesoserphidae Kozlov, 1970 | | 1 | Species | Taxom |
| Mesoveliidae Douglas and ..., 1867 | Pond treaders | 6 | Species | Taxom |
| Mesuropetalidae Bechly, 1996 | | 1 | Species | Taxom |
| Micropterigidae Herrich-Schä..., 1855 | Mandibulate Archaic Moths | 0 | Species | Taxom |
| Miridae Hahn, 1831 | Capsid bugs | 2 | Species | Taxom |
| Mordellidae Latreille, 1802 | Pintail beetles | 5 | Species | Taxom |
| Moundthripidae Nel & al., 2007 | | 1 | Species | Taxom |
| Muchoriidae Willmann, 1989 | | 1 | Species | Taxom |
| Naibiidae Shcherbakov, 2007 | | 2 | Species | Taxom |
| Nannochoristidae Tillyard, 1917 | | 3 | Species | Taxom |
| Naucoridae Leach, 1815 | Creeping water bug | 15 | Species | Taxom |
| Necrotauliidae Handlirsch, 1906 | | 7 | Species | Taxom |
| Nemestrinidae Macquart, 1834 | Tangle-veined flies | 3 | Species | Taxom |
| Nemonychidae Bedel, 1882 | Nemonychid weevils | 71 | Species | Taxom |
| Nemouridae Newman, 1853 | Brown stoneflies | 3 | Species | Taxom |
| Nepidae Latreille, 1802 | Back-swimmer Water-boatmen | 1 | Species | Taxom |
| Notodontidae Stephens, 1829 | Bag Shelter Moths | 3 | Species | Taxom |
| Notonectidae Latreille, 1802 | Back Swimmers | 5 | Species | Taxom |
| Nymphalidae Rafinesque, 1815 | Admirals | 60 | Species | Taxom |
| Nymphidae Rambur, 1842 | Split-footed lacewing | 4 | Species | Taxom |
| Obrieniidae Zherikhin an..., 1994 | | 7 | Species | Taxom |
| Oedemeridae Latreille, 1810 | False Blister Beetle | 11 | Species | Taxom |
| Oligoneuriidae Ulmer, 1914 | Brushleg Mayflies | 5 | Species | Taxom |
| Ommatidae Sharp & Muir, 1912 | | 25 | Species | Taxom |
| Orthophlebiidae Handlirsch, 1906 | | 13 | Species | Taxom |
| Osmylidae Leach, 1815 | Giant lacewings | 21 | Species | Taxom |
| Pachymeridiidae Handlirsch, 1906 | | 2 | Species | Taxom |
| Pachyneuridae Schiner, 1864 | Dark-winged fungus gnats | 1 | Species | Taxom |
| Palaeontinidae Handlirsch, 1906 | Giant cicadas | 3 | Species | Taxom |
| Pamphiliidae Cameron, 1890 | Leaf-rolling sawflies | 1 | Species | Taxom |
| Papilionidae Latreille, 1802 | Apollos | 1 | Species | Taxom |
| Paragonophlebiidae Nel, 2009 | | 1 | Species | Taxom |
| Parahygrobiidae Ponomarenko, 1977 | Extinct family | 1 | Species | Taxom |
| Parandrexidae Kirejtshuk, 1994 | | 1 | Species | Taxom |
| Parasialidae Ponomarenko, 1977 | | 1 | Species | Taxom |
| Parastenophlebiidae Bechly, 2005 | | 1 | Species | Taxom |
| Paraxymyiidae Rohdendorf, 1946 | Paxylommatid wasps | 3 | Species | Taxom |
| Pelecinidae Haliday, 1839 | Ancestral And Modern Pelecinid Wasps | 8 | Species | Taxom |
| Perissommatidae Colless, 1962 | | 2 | Species | Taxom |
| Perlariopseidae N.D. Siniche..., 1985 | | 13 | Species | Taxom |
| Perlidae (Latreille, 1802) | Common stoneflies | 10 | Species | Taxom |
| Perlodidae Klapálek, 1912 | Perlodid stoneflies | 2 | Species | Taxom |
| Petaluridae Needham, 1903 | Grayback dragonfly | 1 | Species | Taxom |
| Philopotamidae Stephens, 1829 | Finger Net caddisflies | 2 | Species | Taxom |
| Platyperlidae Sinitshenkova, 1982 | | 3 | Species | Taxom |
| Pleciofungivoridae Rohdendorf, 1946 | | 31 | Species | Taxom |
| Pleciomimidae Rodendorf, 1949 | | 6 | Species | Taxom |
| Pleocomidae LeConte, 1861 | Rain beetle | 3 | Species | Taxom |
| Polystoechotidae Handlirsch, 1906 | Giant lacewing | 1 | Species | Taxom |
| Praeaulacidae Rasnitsyn, 1972 | | 23 | Species | Taxom |
| Procercopidae Handlirsch, 1906 | | 1 | Species | Taxom |
| Prochresmodidae Vishniakova, 1980 | | 1 | Species | Taxom |
| Procramptonomyiidae Kovalev, 1985 | | 4 | Species | Taxom |
| Progonocimicidae Handlirsch, 1906 | | 17 | Species | Taxom |
| Prohemerobiidae Handlirsch, 1906 | | 1 | Species | Taxom |
| Prohemeroscopidae Bechly & Ueda, 2002 | | 2 | Species | Taxom |
| Prophalangopsidae Saussure, 1878 | Grigs | 22 | Species | Taxom |
| Prostenophlebiidae Fleck & al., 2003 | | 1 | Species | Taxom |
| Proterogomphidae Bechly, 1996 | | 10 | Species | Taxom |
| Protocoridae Handlirsch, 1906 | | 1 | Species | Taxom |
| Protodiplatyidae Martynov, 1925 | | 6 | Species | Taxom |
| Protogryllidae Zeuner, 1937 | | 10 | Species | Taxom |
| Protoligoneuridae Rohdendorf, 1962 | | 0 | Species | Taxom |
| Protomyrmeleontidae Handlirsch, 1906 | | 7 | Species | Taxom |
| Protopleciidae Rohdendorf, 1946 | | 5 | Species | Taxom |
| Protopsyllidiidae Becker-Migdi..., 1960 | | 4 | Species | Taxom |
| Protorhyphidae Handlirsch, 1906 | | 3 | Species | Taxom |
| Pseudocaeciliidae Pearman, 1936 | False Lizard Barklice | 1 | Species | Taxom |
| Pseudomylacridae Handlirsch, 1906 | | 1 | Species | Taxom |
| Pseudopolycentropodidae Handlirsch, 1925 | | 1 | Species | Taxom |
| Pseudopulicidae Gao, Shih & Ren, 2012 | | 0 | Species | Taxom |
| Psychodidae Newman, 1834 | Drain flies | 21 | Species | Taxom |
| Psychopsidae Handlirsch, 1906 | Silky lacewing | 1 | Species | Taxom |
| Pterocimicidae Popov & al., 1994 | | 1 | Species | Taxom |
| Pteromalidae Dalman, 1820 | Pteromalid wasps | 1 | Species | Taxom |
| Ptiliidae Heer, 1843 | Feather-wing beetles | 2 | Species | Taxom |
| Ptychopteridae Osten Sacken, 1862 | Phantom crane flies | 21 | Species | Taxom |
| Pygidicranidae (Verhoeff, 1902) | | 5 | Species | Taxom |
| Pyralidae Latreille, 1802 | Flour Moths | 2 | Species | Taxom |
| Raphidiomimidae Vishniakova, 1973 | | 0 | Species | Taxom |
| Reduviidae Latreille, 1807 | Assassin and thread-legged bugs | 1 | Species | Taxom |
| Rhagionempididae Rohdendorf, 1938 | | 2 | Species | Taxom |
| Rhagionidae Latreille, 1802 | Snipe flies | 12 | Species | Taxom |
| Saldidae Amyot and Se..., 1843 | Shore bug | 7 | Species | Taxom |
| Scarabaeidae Latreille, 1802 | Dung beetles | 51 | Species | Taxom |
| Scatopsidae Newman, 1834 | Dung midges | 2 | Species | Taxom |
| Scelionidae Haliday, 1839 | Scelionid wasps | 7 | Species | Taxom |
| Schizophoridae Ponomarenko, 1968 | | 6 | Species | Taxom |
| Scydmaenidae (Leach, 1815) | Ant-like stone beetles | 11 | Species | Taxom |
| Septiventeridae Bai & al., 2013 | | 1 | Species | Taxom |
| Sepulcidae Rasnitsyn, 1968 | | 2 | Species | Taxom |
| Sharephemeridae Sinitshenkova, 2002 | | 1 | Species | Taxom |
| Sialidae Leach, 1815 | Alderflies | 2 | Species | Taxom |
| Siberioperlidae Sinitshenkova, 1983 | | 8 | Species | Taxom |
| Sibiriothaumatidae Sukatcheva &..., 1998 | | 1 | Species | Taxom |
| Simuliidae Newman, 1834 | Black flies | 5 | Species | Taxom |
| Siphlonuridae Banks, 1900 | Primitive Minnow Mayflies | 9 | Species | Taxom |
| Solenoptilidae Handlirsch, 1906 | | 1 | Species | Taxom |
| Sphecidae Latreille, 1802 | Digger & Sand wasps | 1 | Species | Taxom |
| Staphylinidae Lameere, 1900 | Rove beetles | 86 | Species | Taxom |
| Steleopteridae Handlirsch, 1906 | | 4 | Species | Taxom |
| Stenophlebiidae Needham, 1903 | | 5 | Species | Taxom |
| Strashilidae Rasnitsyn, 1992 | | 1 | Species | Taxom |
| Synteliidae Lewis, 1882 | | 1 | Species | Taxom |
| Syrphidae Latreille, 1802 | Drone flies | 2 | Species | Taxom |
| Tabanidae Latreille, 1802 | Breeze flies | 2 | Species | Taxom |
| Taeniopterygidae Klapálek, 1905 | Taeniopterygid winter stoneflies | 5 | Species | Taxom |
| Tanyderidae Alexander, 1919 | Primitive crane flies | 7 | Species | Taxom |
| Tarsophlebiidae Handlirsch, 1906 | | 4 | Species | Taxom |
| Tenebrionidae Latreille, 1802 | Darkling Beetle | 10 | Species | Taxom |
| Tenthredinidae Latreille, 1804 | Common sawflies | 7 | Species | Taxom |
| Termitidae Latreille, 1802 | Higher termites | 1 | Species | Taxom |
| Termopsidae Grassé, 1949 | Damp wood termite | 1 | Species | Taxom |
| Tettigarctidae Distant, 1905 | Hairy cicada | 1 | Species | Taxom |
| Tettigoniidae Krauss, 1902 | Bush crickets | 3 | Species | Taxom |
| Thaumaleidae Bezzi, 1913 | Solitary midges | 1 | Species | Taxom |
| Tipulidae Latreille, 1802 | Crane Flies | 40 | Species | Taxom |
| Torephemeridae Sinitshekova, 1989 | | 2 | Species | Taxom |
| Trachypachidae C. G. Thomson, 1857 | False ground beetle | 20 | Species | Taxom |
| Trichoceridae Rondani, 1841 | Winter Crane Flies | 39 | Species | Taxom |
| Tricoleidae (Ponomarenko, 1969) | | 1 | Species | Taxom |
| Tridactylidae Saussure, 1874 | Pygmy mole cricket | 4 | Species | Taxom |
| Trogossitidae Latreille, 1802 | Bark gnawing beetle | 6 | Species | Taxom |
| Tuphellidae Gorochov, 1988 | | 5 | Species | Taxom |
| Undopterigidae (Kozlov, 1988) | | 1 | Species | Taxom |
| Vitimotauliidae Sukatsheva, 1968 | | 2 | Species | Taxom |
| Xyelidae Newman, 1835 | Sawfly | 46 | Species | Taxom |
| Xyelotomidae Rasnitsyn, 1968 | | 1 | Species | Taxom |
| Xyelydidae Rasnitsyn, 1968 | | 1 | Species | Taxom |
