List of families for St. Louis County (Missouri)
289 Families width 2223 Species and 28 Subspecies
| Acanaloniidae Amyot and Se..., 1843 | Acanalonid planthoppers | 1 | Species | Taxom |
| Achilidae Stål, 1866 | Achilid Planthoppers | 2 | Species | Taxom |
| Acrididae MacLeay, 1819 | Grasshoppers and locusts | 48 | Species | Taxom |
| Aeshnidae Rambur, 1842 | Darners | 9 | Species | Taxom |
| Agaonidae Walker, 1848 | Fig wasp | 1 | Species | Taxom |
| Agromyzidae Fallen, 1823 | Leaf miner flies | 4 | Species | Taxom |
| Alydidae Amyot & Serv..., 1843 | Bean bugs | 1 | Species | Taxom |
| Andrenidae Webster, 1913 | Andrenid bees | 21 | Species | Taxom |
| Anthicidae Latreille, 1819 | Ant beetles | 2 | Species | Taxom |
| Anthocoridae Fieber, 1837 | Flower bugs | 1 | Species | Taxom |
| Anthomyiidae Robineau-Des..., 1830 | Anthomyiid flies | 1 | Species | Taxom |
| Anthribidae Billberg, 1820 | Fungus Weevil | 1 | Species | Taxom |
| Aphalaridae Löw, 1879 | | 1 | Species | Taxom |
| Aphididae Latreille, 1802 | Aphids | 17 | Species | Taxom |
| Aphrophoridae Evans, 1946 | Froghoppers | 2 | Species | Taxom |
| Apidae Latreille, 1802 | Bumble bees | 39 | Species | Taxom |
| Argidae Konow, 1890 | Argid flies | 2 | Species | Taxom |
| Ascalaphidae Rambur, 1842 | Owlflies | 1 | Species | Taxom |
| Asilidae Latreille, 1802 | Assassin flies | 7 | Species | Taxom |
| Autostichidae Le Marchand, 1947 | Autostichid Moths | 1 | Species | Taxom |
| Baetidae Leach, 1815 | Mayflies | 2 | Species | Taxom |
| Belostomatidae Leach, 1815 | Alligator ticks | 3 | Species | Taxom |
| Bethylidae Halliday, 1839 | Bethylid wasps | 0 | Species | Taxom |
| Blattellidae (Karny, 1908) | German Cockroach | 2 | Species | Taxom |
| Blattidae Stephens, 1829 | American cockroaches | 3 | Species | Taxom |
| Bombycidae Latreille, 1802 | Lappet moths | 2 | Species | Taxom |
| Bombyliidae Latreille, 1802 | Bee Flies | 4 | Species | Taxom |
| Bostrichidae Latreille, 1802 | Auger beetles | 3 | Species | Taxom |
| Braconidae Latreille, 1829 | Braconid wasps | 21 | Species | Taxom |
| Buprestidae Leach, 1815 | Flat-headed wood-borers | 9 | Species | Taxom |
| Caenidae Newman, 1853 | Small square-gill mayflies | 1 | Species | Taxom |
| Calliphoridae Brauer & Ber..., 1889 | Blow flies | 6 | Species | Taxom |
| Callirhipidae Emden, 1924 | Callirhipid beetles | 1 | Species | Taxom |
| Calophyidae Vondracek, 1957 | | 1 | Species | Taxom |
| Calopterygidae Selys, 1850 | Broad-winged damselflies | 1 | Species | Taxom |
| Cantharidae Imhoff, 1856 | Cantharids | 2 | Species | Taxom |
| Capniidae Klapálek, 1905 | Capniid winter stoneflies | 6 | Species | Taxom |
| Carabidae Latreille, 1802 | Carabid beetles | 84 | Species | Taxom |
| Cecidomyiidae Newman, 1834 | Forest Midges | 3 | Species | Taxom |
| Cerambycidae Latreille, 1802 | Long Horn beetles | 50 | Species | Taxom |
| Ceraphronidae Haliday, 1833 | Ceraphronid wasps | 0 | Species | Taxom |
| Ceratopogonidae Newman, 1834 | Biting midge | 0 | Species | Taxom |
| Chaoboridae Newman, 1834 | Phantom midge | 1 | Species | Taxom |
| Chironomidae Erichson, 1842 | Chironomids | 2 | Species | Taxom |
| Chrysididae Latreille, 1802 | Chrysidid wasps | 1 | Species | Taxom |
| Chrysomelidae Latreille, 1802 | Casebearers | 28 | Species | Taxom |
| Chrysopidae Schneider, 1851 | And Green Lacewings | 2 | Species | Taxom |
| Cicadellidae Latreille, 1802 | Cicadellids | 9 | Species | Taxom |
| Cicadidae Westwood, 1840 | Cicada | 2 | Species | Taxom |
| Cimbicidae Kirby, 1837 | Cimbicid sawflies | 1 | Species | Taxom |
| Cimicidae Latreille, 1802 | Bat bugs | 1 | Species | Taxom |
| Cixiidae Spinola, 1839 | Cixid planthoppers | 5 | Species | Taxom |
| Clastopteridae Stål, 1858 | Clastopterid Spittlebugs | 2 | Species | Taxom |
| Cleridae Latreille, 1802 | Checkered Beetle | 6 | Species | Taxom |
| Coccinellidae Latreille, 1807 | Coccinelles | 18 | Species | Taxom |
| Coenagrionidae Kirby, 1890 | Narrow-winged damselflies | 25 | Species | Taxom |
| Coleophoridae Hübner, 1825 | Case moths | 5 | Species | Taxom |
| Colletidae Lepeletier, 1841 | Colletid bees | 7 | Species | Taxom |
| Coniopterygidae Burmeister, 1839 | Dusty lacewings | 5 | Species | Taxom |
| Cordulegastridae Calvert, 1893 | Biddie | 1 | Species | Taxom |
| Corduliidae Selys-Longch..., 1850 | Baskettails | 5 | Species | Taxom |
| Coreidae Leach, 1815 | Broad-headed bugs | 3 | Species | Taxom |
| Corixidae Leach, 1815 | Lesser Water-Boatman | 4 | Species | Taxom |
| Corydalidae Burmeister, 1839 | Dobsonflies | 4 | Species | Taxom |
| Cosmopterigidae Heinemann & ..., 1876 | Cosmet Moths | 3 | Species | Taxom |
| Cossidae Leach, 1815 | Borers | 1 | Species | Taxom |
| Crabronidae Latreille, 1802 | Bee Wolves | 5 | Species | Taxom |
| Crambidae Latreille, 1810 | Crambid Snout Moths | 59 | Species | Taxom |
| Culicidae Meigen, 1818 | Mosquito | 16 | Species | Taxom |
| Curculionidae Latreille, 1802 | Ambrosia beetles | 31 | Species | Taxom |
| Cydnidae Billberg, 1820 | Burrower bugs | 1 | Species | Taxom |
| Cynipidae Latreille, 1802 | Cynipid gall wasps | 4 | Species | Taxom |
| Dermestidae Hope, 1840 | Carpet beetles | 2 | Species | Taxom |
| Diapriidae Latreille, 1796 | Diapriid wasps | 0 | Species | Taxom |
| Diprionidae Rohwer, 1911 | Conifer sawflies | 2 | Species | Taxom |
| Drepanidae Meyrick, 1895 | Drepanids | 7 | Species | Taxom |
| Drosophilidae Rondani, 1856 | Fruit flies | 1 | Species | Taxom |
| Dryinidae Haliday, 1840 | Dryinid wasps | 1 | Species | Taxom |
| Dryopidae Billberg, 1820 | Long toed water beetle | 2 | Species | Taxom |
| Dytiscidae Leach, 1815 | Diving beetles | 12 | Species | Taxom |
| Elachistidae Bruand, 1851 | Elachistid moths | 8 | Species | Taxom |
| Elateridae Leach, 1815 | Click Beetle | 5 | Species | Taxom |
| Elmidae Curtis, 1830 | Drive beetles | 9 | Species | Taxom |
| Empididae Latreille, 1809 | Balloon flies | 1 | Species | Taxom |
| Encyrtidae Walker, 1837 | Encyrtid wasps | 2 | Species | Taxom |
| Endomychidae Leach, 1815 | False Ladybirds | 1 | Species | Taxom |
| Ephemerellidae (Klapálek, 1909) | Blue-Winged Olive Ephemerellidae | 1 | Species | Taxom |
| Ephemeridae Leach, 1817 | Burrowing mayflies | 2 | Species | Taxom |
| Epipyropidae Dyar, 1903 | Planthopper Parasite Moths | 1 | Species | Taxom |
| Erebidae Leach, 1815 | Erebid Moths | 162 | Species | Taxom |
| Eriocraniidae Rebel, 1901 | Eriocraniid moths | 1 | Species | Taxom |
| Erotylidae Latreille, 1802 | Pleasing Fungus Beetle | 2 | Species | Taxom |
| Eulophidae Westwood, 1829 | Eulophid wasps | 6 | Species | Taxom |
| Eupelmidae Walker, 1833 | Eupelmid wasps | 1 | Species | Taxom |
| Eurytomidae Walker, 1832 | Eurytomid wasps | 0 | Species | Taxom |
| Euteliidae Grote, 1882 | Euteliid Moths | 2 | Species | Taxom |
| Figitidae Thomson, 1862 | Figitid wasps | 1 | Species | Taxom |
| Flatidae Spinola, 1839 | Flatid planthoppers | 1 | Species | Taxom |
| Forficulidae Stephens, 1829 | Common Earwig | 1 | Species | Taxom |
| Formicidae Latreille, 1809 | Ants | 63 | Species | Taxom |
| Galacticidae Minet, 1986 | Galacticid Moths | 1 | Species | Taxom |
| Gasteruptiidae Ashmead, 1900 | Carrot Wasps | 1 | Species | Taxom |
| Gelastocoridae Kirkaldy, 1897 | Toad bug | 1 | Species | Taxom |
| Gelechiidae Stainton, 1854 | Gelechiid moths | 22 | Species | Taxom |
| Geometridae Leach, 1815 | Cankerworm moths | 104 | Species | Taxom |
| Gerridae Leach, 1815 | Jesus bugs | 2 | Species | Taxom |
| Glossosomatidae Wallengren, 1891 | Little Black Caddisflies | 0 | Species | Taxom |
| Gomphidae Rambur, 1842 | Club-tailed dragonflies | 13 | Species | Taxom |
| Gracillariidae Stainton, 1854 | Blotch leaf miner moths | 5 | Species | Taxom |
| Gryllacrididae Blanchard, 1845 | Camel Crickets | 1 | Species | Taxom |
| Gryllidae Bolivar, 1878 | Crickets | 5 | Species | Taxom |
| Gryllotalpidae Saussure, 1870 | Mole cricket | 1 | Species | Taxom |
| Gyrinidae Latreille, 1802 | Whirligig beetle | 5 | Species | Taxom |
| Halictidae Thomson, 1869 | Flower bees | 23 | Species | Taxom |
| Haliplidae Aubé, 1836 | Crawling Water Beetle | 4 | Species | Taxom |
| Helicopsychidae Ulmer, 1912 | Snail Case caddisflies | 1 | Species | Taxom |
| Hemerobiidae Latreille, 1802 | Brown Lacewing | 6 | Species | Taxom |
| Heptageniidae Needham, 1901 | Flat-Bodied Up-Wings Heptageniidae | 5 | Species | Taxom |
| Hesperiidae Latreille, 1809 | Skipper | 58 | Species | Taxom |
| Heteroceridae MacLeay, 1825 | Mud beetles | 1 | Species | Taxom |
| Histeridae Gyllenhal, 1808 | Clown beetle | 8 | Species | Taxom |
| Homotomidae Heslop-Harrison, 1958 | | 1 | Species | Taxom |
| Hybosoridae Erichson, 1847 | Pill scarab beetles | 3 | Species | Taxom |
| Hybotidae Meigen, 1820 | Dance flies | 1 | Species | Taxom |
| Hydrobiosidae Ulmer, 1905 | | 4 | Species | Taxom |
| Hydrometridae Billberg, 1820 | Marsh treader | 0 | Species | Taxom |
| Hydrophilidae Latreille, 1802 | Silver Water Beetles | 9 | Species | Taxom |
| Hydropsychidae Curtis, 1835 | Net Spinning caddisflies | 8 | Species | Taxom |
| Hydroptilidae Stephens, 1836 | Micro caddisflies | 5 | Species | Taxom |
| Hymenopodidae Giglio-Tos, 1919 | Flower mimic mantises | 1 | Species | Taxom |
| Ichneumonidae Latreille, 1802 | Ichneumon flies | 15 | Species | Taxom |
| Issidae Spinola, 1839 | Issid planthoppers | 2 | Species | Taxom |
| Labiidae (Burr, 1909) | Little earwig | 1 | Species | Taxom |
| Lampyridae Latreille, 1817 | Fireflies | 1 | Species | Taxom |
| Lasiocampidae Harris, 1841 | Eggar Moths | 6 | Species | Taxom |
| Latridiidae Erichson, 1842 | Minute brown scavenger beetle | 1 | Species | Taxom |
| Lepidostomatidae Ulmer, 1903 | Bizarre Caddisflies | 1 | Species | Taxom |
| Leptoceridae Leach, 1815 | Long Horned caddisflies | 7 | Species | Taxom |
| Leptohyphidae Landa & Soldán, 1985 | Little Stout Crawler Mayflies | 0 | Species | Taxom |
| Leptophlebiidae Banks, 1900 | Leptophlebiids | 0 | Species | Taxom |
| Lestidae Calvert, 1901 | Spread-winged damselflies | 8 | Species | Taxom |
| Leucospidae Fabricius, 1775 | Leucospid wasps | 1 | Species | Taxom |
| Leuctridae Klapálek, 1905 | Needle Or Willow Stoneflies | 1 | Species | Taxom |
| Libellulidae Rambur, 1842 | Chasers | 33 | Species | Taxom |
| Limacodidae Duponchel, 1845 | Cup moths | 8 | Species | Taxom |
| Limnephilidae Kolenati, 1848 | Northern caddisflies | 2 | Species | Taxom |
| Lucanidae Latreille, 1804 | Stag Beetle | 1 | Species | Taxom |
| Lycaenidae Leach, 1815 | Blue butterflies | 32 | Species | Taxom |
| Lygaeidae Schilling, 1829 | Chinch bugs | 1 | Species | Taxom |
| Machilidae Grassi, 1888 | Jumping bristletail | 0 | Species | Taxom |
| Mantidae Burmeister, 1838 | Mantids | 1 | Species | Taxom |
| Mantispidae Leach, 1815 | Mantid lacewings | 2 | Species | Taxom |
| Megachilidae Schenk, 1860 | And Resin Bees | 21 | Species | Taxom |
| Megalopygidae Herrich-Schä..., 1855 | Crinkled Flannel Moths | 1 | Species | Taxom |
| Megapodagrionidae Tillyard, 1917 | Flatwing | 1 | Species | Taxom |
| Meinertellidae Verhoeff, 1910 | Hump-backed Bristletails | 1 | Species | Taxom |
| Melandryidae Leach, 1815 | False Darkling Beetle | 1 | Species | Taxom |
| Meloidae Gyllenhal, 1810 | Blister Beetle | 2 | Species | Taxom |
| Membracidae Germar, 1821 | Horned Treehoppers | 1 | Species | Taxom |
| Meropeidae Espen-Petersen, 1921 | Earwig-flies | 1 | Species | Taxom |
| Micropezidae Illiger, 1798 | Stilt Flies | 1 | Species | Taxom |
| Mimallonidae Burmeister, 1878 | Mimallonid Moths | 2 | Species | Taxom |
| Miridae Hahn, 1831 | Capsid bugs | 7 | Species | Taxom |
| Monotomidae Laporte, 1840 | Minute Clubbed Beetles | 3 | Species | Taxom |
| Mordellidae Latreille, 1802 | Pintail beetles | 5 | Species | Taxom |
| Muscidae Latreille, 1802 | Face flies | 4 | Species | Taxom |
| Mutillidae André, 1907 | Cow ant | 2 | Species | Taxom |
| Mycetophagidae Leach, 1815 | Hairy fungus beetle | 5 | Species | Taxom |
| Mycetophilidae Newman, 1834 | Fungus Gnat | 1 | Species | Taxom |
| Mydidae Bezzi, 1903 | Mydas flies | 1 | Species | Taxom |
| Mymaridae Haliday, 1833 | Fairflies | 1 | Species | Taxom |
| Myrmeleontidae Latreille, 1802 | Ant lions | 3 | Species | Taxom |
| Naucoridae Leach, 1815 | Creeping water bug | 0 | Species | Taxom |
| Nemouridae Newman, 1853 | Brown stoneflies | 2 | Species | Taxom |
| Nepidae Latreille, 1802 | Back-swimmer Water-boatmen | 2 | Species | Taxom |
| Nitidulidae Latreille, 1802 | Nitidules | 8 | Species | Taxom |
| Noctuidae Latreille, 1809 | Armyworms | 173 | Species | Taxom |
| Nolidae Hampson, 1894 | Hatted Caterpillars | 6 | Species | Taxom |
| Noteridae C. G. Thomson, 1860 | Burrowing water beetle | 0 | Species | Taxom |
| Notodontidae Stephens, 1829 | Bag Shelter Moths | 36 | Species | Taxom |
| Notonectidae Latreille, 1802 | Back Swimmers | 4 | Species | Taxom |
| Nymphalidae Rafinesque, 1815 | Admirals | 54 | Species | Taxom |
| Oecanthidae (Blanchard, 1845) | Tree cricket | 8 | Species | Taxom |
| Oecophoridae Bruand, 1851 | Concealer Moths | 6 | Species | Taxom |
| Oestridae Leach, 1815 | Bot flies | 1 | Species | Taxom |
| Ormyridae Förster, 1856 | Armyrids | 2 | Species | Taxom |
| Oxycarenidae Stål, 1862 | | 1 | Species | Taxom |
| Pamphiliidae Cameron, 1890 | Leaf-rolling sawflies | 0 | Species | Taxom |
| Panorpidae Linnaeus, 1758 | Common scorpionflies | 1 | Species | Taxom |
| Papilionidae Latreille, 1802 | Apollos | 9 | Species | Taxom |
| Pelecinidae Haliday, 1839 | Ancestral And Modern Pelecinid Wasps | 1 | Species | Taxom |
| Pentatomidae Leach, 1815 | Lesser shield bugs | 23 | Species | Taxom |
| Pergidae Rohwer, 1911 | Pergid flies | 0 | Species | Taxom |
| Perilampidae Latreille, 1809 | Perilampid waps | 1 | Species | Taxom |
| Perlidae (Latreille, 1802) | Common stoneflies | 7 | Species | Taxom |
| Perlodidae Klapálek, 1912 | Perlodid stoneflies | 4 | Species | Taxom |
| Phalangopsidae (Chopard, 1949) | Spider cricket | 1 | Species | Taxom |
| Philopotamidae Stephens, 1829 | Finger Net caddisflies | 2 | Species | Taxom |
| Philopteridae Burmeister, 1830 | | 1 | Species | Taxom |
| Phoridae Curtis, 1833 | Coffin Flies | 0 | Species | Taxom |
| Phryganeidae (Leach, 1815) | Giant casemaker | 2 | Species | Taxom |
| Phylloxeridae Herrich-Scha..., 1854 | Phylloxeran Aphids | 1 | Species | Taxom |
| Pieridae Duponchel, 1835 | Brimstones | 17 | Species | Taxom |
| Platygastridae Haliday, 1833 | Platygastrid wasps | 1 | Species | Taxom |
| Platystomatidae Schiner, 1862 | Picture-winged flies | 1 | Species | Taxom |
| Pleidae Fieber, 1817 | Pigmy backswimmers | 1 | Species | Taxom |
| Plutellidae Guenée, 1845 | Diamond-back moths | 1 | Species | Taxom |
| Podoscirtidae Saussure, 1878 | | 1 | Species | Taxom |
| Polycentropodidae Ulmer, 1903 | Tube Maker Caddisflies | 1 | Species | Taxom |
| Pompilidae Latreille, 1805 | Pompilid wasps | 1 | Species | Taxom |
| Potamanthidae Albarda, 1888 | Hacklegill mayflies | 1 | Species | Taxom |
| Prisopodidae Brunner von ..., 1893 | | 1 | Species | Taxom |
| Psephenidae Lacordaire, 1854 | Water pennies | 2 | Species | Taxom |
| Pseudococcidae Heymons, 1915 | Mealy Bugs | 1 | Species | Taxom |
| Psocidae Samouelle, 1819 | Common bark louse | 1 | Species | Taxom |
| Psychidae Boisduval, 1828 | Bagmoths | 2 | Species | Taxom |
| Psychodidae Newman, 1834 | Drain flies | 3 | Species | Taxom |
| Psychomyiidae Walker, 1852 | Net Tube Caddisflies | 2 | Species | Taxom |
| Psyllidae Latreille, 1807 | Jumping plant lice | 3 | Species | Taxom |
| Pteromalidae Dalman, 1820 | Pteromalid wasps | 1 | Species | Taxom |
| Pteronarcyidae Enderlein, 1909 | Giant stoneflies | 0 | Species | Taxom |
| Pterophoridae Zeller, 1841 | Plume Moths | 4 | Species | Taxom |
| Ptinidae Latreille, 1802 | Death-watch and Spider Beetles | 1 | Species | Taxom |
| Pyralidae Latreille, 1802 | Flour Moths | 28 | Species | Taxom |
| Pyrgotidae Schiner, 1868 | Light Flies | 1 | Species | Taxom |
| Pyrochroidae Latreille, 1807 | Cardinal beetles | 3 | Species | Taxom |
| Pyrrhocoridae Dohrn, 1859 | Cotton stainers | 1 | Species | Taxom |
| Reduviidae Latreille, 1807 | Assassin and thread-legged bugs | 3 | Species | Taxom |
| Rhagionidae Latreille, 1802 | Snipe flies | 2 | Species | Taxom |
| Rhinophoridae Robineau-Des..., 1863 | Woodlouse flies | 1 | Species | Taxom |
| Rhopalidae Amyot & Serv..., 1843 | Rhopalid Bugs | 1 | Species | Taxom |
| Rhopalopsyllidae Oudemans, 1909 | Marsupial fleas | 1 | Species | Taxom |
| Rhyparochromidae Amyot & Serv..., 1843 | Dirt-colored Seed Bugs | 2 | Species | Taxom |
| Riodinidae Grote, 1895 | Metalmark Butterflies | 3 | Species | Taxom |
| Ripiphoridae Gemminger & ..., 1870 | Rhipiphoridae | 1 | Species | Taxom |
| Saldidae Amyot and Se..., 1843 | Shore bug | 1 | Species | Taxom |
| Saturniidae Boisduval, 1837 | And Giant Silk Moths | 12 | Species | Taxom |
| Scarabaeidae Latreille, 1802 | Dung beetles | 52 | Species | Taxom |
| Scathophagidae Robineau-Des..., 1830 | Dung flies | 2 | Species | Taxom |
| Scelionidae Haliday, 1839 | Scelionid wasps | 2 | Species | Taxom |
| Scenopinidae Burmeister, 1835 | Window Flies | 1 | Species | Taxom |
| Sciomyzidae Fallen, 1820 | Marsh Flies | 1 | Species | Taxom |
| Scirtidae Fleming, 1821 | Marsh Beetle | 0 | Species | Taxom |
| Scoliidae Leach, 1815 | Mammoth wasps | 1 | Species | Taxom |
| Scraptiidae Mulsant, 1856 | Antlike leaf beetles | 1 | Species | Taxom |
| Scutelleridae Leach, 1815 | Jewel bugs | 1 | Species | Taxom |
| Sesiidae Boisduval, 1828 | Clear Wings | 13 | Species | Taxom |
| Sialidae Leach, 1815 | Alderflies | 0 | Species | Taxom |
| Silphidae Latreille, 1807 | Burying And Carrion Beetles | 6 | Species | Taxom |
| Silvanidae Kirby, 1837 | Flat bark beetles | 3 | Species | Taxom |
| Simuliidae Newman, 1834 | Black flies | 1 | Species | Taxom |
| Siphlonuridae Banks, 1900 | Primitive Minnow Mayflies | 0 | Species | Taxom |
| Siricidae Billberg, 1820 | Horntail | 1 | Species | Taxom |
| Sphecidae Latreille, 1802 | Digger & Sand wasps | 5 | Species | Taxom |
| Sphingidae Latreille, 1802 | Hawk Moths | 38 | Species | Taxom |
| Staphylinidae Lameere, 1900 | Rove beetles | 11 | Species | Taxom |
| Stenopelmatidae Burmeister, 1838 | Bulldog Raspy Crickets | 0 | Species | Taxom |
| Stratiomyidae Latreille, 1802 | Soldier flies | 2 | Species | Taxom |
| Syrphidae Latreille, 1802 | Drone flies | 23 | Species | Taxom |
| Tabanidae Latreille, 1802 | Breeze flies | 5 | Species | Taxom |
| Tachinidae (Robineau-Des..., 1830) | Bristle Flies | 5 | Species | Taxom |
| Taeniopterygidae Klapálek, 1905 | Taeniopterygid winter stoneflies | 5 | Species | Taxom |
| Tenebrionidae Latreille, 1802 | Darkling Beetle | 14 | Species | Taxom |
| Tenthredinidae Latreille, 1804 | Common sawflies | 11 | Species | Taxom |
| Tephritidae Newman, 1834 | Fruit flies | 4 | Species | Taxom |
| Termitidae Latreille, 1802 | Higher termites | 1 | Species | Taxom |
| Tetratomidae Billberg, 1820 | Polypore fungus beetle | 3 | Species | Taxom |
| Tetrigidae Rambur, 1838 | Groundhoppers | 6 | Species | Taxom |
| Tettigoniidae Krauss, 1902 | Bush crickets | 9 | Species | Taxom |
| Thyreocoridae Amyot and Se..., 1843 | Black bugs | 2 | Species | Taxom |
| Thyrididae Herrich-Schä..., 1846 | Picture Winged Leaf Moths | 1 | Species | Taxom |
| Tineidae Latreille, 1810 | & Allies | 11 | Species | Taxom |
| Tingidae Laporte, 1832 | Lace bug | 6 | Species | Taxom |
| Tiphiidae Leach, 1815 | Flower wasps | 1 | Species | Taxom |
| Tipulidae Latreille, 1802 | Crane Flies | 9 | Species | Taxom |
| Tortricidae Latreille, 1803 | Bell Moths | 59 | Species | Taxom |
| Torymidae Walker, 1833 | Apple seed chalcids | 1 | Species | Taxom |
| Trichogrammatidae Haliday, 1851 | Trichogrammatid wasps | 1 | Species | Taxom |
| Tridactylidae Saussure, 1874 | Pygmy mole cricket | 1 | Species | Taxom |
| Trigonidiidae (Saussure, 1870) | And Ground Crickets | 3 | Species | Taxom |
| Triozidae Löw, 1879 | Jumping plant lice | 2 | Species | Taxom |
| Trogidae (MacLeay, 1819) | Gnawer beetles | 4 | Species | Taxom |
| Veliidae Amyot & Serv..., 1843 | Broad-shouldered bugs | 0 | Species | Taxom |
| Vespidae Leach, 1815 | And Allies | 13 | Species | Taxom |
| Xylomyidae Verrall, 1901 | Wood soldier flies | 1 | Species | Taxom |
| Xylophagidae Fallen, 1810 | Awl-flies | 2 | Species | Taxom |
| Yponomeutidae Stephens, 1829 | Ermine Moths | 5 | Species | Taxom |
| Zopheridae Solier, 1834 | Cylindrical bark beetles | 1 | Species | Taxom |
| Zygaenidae Latreille, 1809 | Burnet Forester | 3 | Species | Taxom |
