| Acaridae Latreille, 1802 | Acarid mites | 7 | Species | Taxom |
| Actinopodidae Simon, 1892 | Mouse Spiders | 1 | Species | Taxom |
| Aeroglyphidae Zakhvatkin, 1941 | | 0 | Species | Taxom |
| Agelenidae C. L. Koch, 1837 | Agelenid Spiders | 3 | Species | Taxom |
| Algophagidae Fain, 1974 | | 0 | Species | Taxom |
| Alicorhagiidae Grandjean, 1939 | | 1 | Species | Taxom |
| Alloptidae Gaud, 1957 | | 2 | Species | Taxom |
| Alycidae Canestrini &..., 1877 | | 0 | Species | Taxom |
| Amaurobiidae Thorell, 1870 | Amaurobiids | 2 | Species | Taxom |
| Amblyommidae Banks, 1907 | | 5 | Species | Taxom |
| Ameroseiidae Evans, 1961 | | 2 | Species | Taxom |
| Analgidae Trouessart &..., 1884 | Feather mites | 1 | Species | Taxom |
| Anthracomartidae Haase, 1890 | | 1 | Species | Taxom |
| Antrodiaetidae Gertsch, 1940 | Folding trapdoor spider | 1 | Species | Taxom |
| Anyphaenidae Bertkau, 1878 | Anyphaenid sac spiders | 2 | Species | Taxom |
| Araneidae Simon, 1895 | Golden orb web spiders | 37 | Species | Taxom |
| Argasidae C. L. Koch, 1844 | Soft tick | 1 | Species | Taxom |
| Arrenuridae Thor, 1900 | | 4 | Species | Taxom |
| Ascidae Oudemans, 1905 | | 8 | Species | Taxom |
| Atopomelidae Fain, 1972 | | 1 | Species | Taxom |
| Aturidae Thor, 1900 | | 3 | Species | Taxom |
| Atypidae Thorell, 1870 | Atypical tarantulas | 2 | Species | Taxom |
| Avenzoariidae Oudemans, 1905 | | 0 | Species | Taxom |
| Bdellidae Dugès, 1834 | Snout Mites | 1 | Species | Taxom |
| Blattisociidae (Garman, 1948) | | 5 | Species | Taxom |
| Bogatiidae Motas & Tana..., 1948 | | 1 | Species | Taxom |
| Bothriuridae Simon, 1880 | | 1 | Species | Taxom |
| Calyptostomatidae Oudemans, 1923 | | 0 | Species | Taxom |
| Camerobiidae Southcott, 1957 | Stilt-legged mites | 0 | Species | Taxom |
| Caraboacaridae Mahunka, 1970 | | 0 | Species | Taxom |
| Carabodidae Koch, 1837 | | 1 | Species | Taxom |
| Chaetodactylidae Zakhvatkin, 1941 | | 0 | Species | Taxom |
| Cheliferidae Risso, 1826 | | 2 | Species | Taxom |
| Chernetidae Menge, 1855 | | 2 | Species | Taxom |
| Cheyletidae Leach, 1815 | | 7 | Species | Taxom |
| Chortoglyphidae Berlese, 1897 | | 1 | Species | Taxom |
| Chthoniidae Daday, 1888 | | 2 | Species | Taxom |
| Cocceupodidae Jesionowska, 2010 | | 0 | Species | Taxom |
| Corinnidae Karsch, 1880 | Ant-like Sac Spiders | 9 | Species | Taxom |
| Cosmetidae C. L. Koch, 1839 | | 2 | Species | Taxom |
| Crotalomorphidae Lindquist & ..., 2002 | | 0 | Species | Taxom |
| Cunaxidae Thor, 1902 | Predatory Mites | 2 | Species | Taxom |
| Cybaeidae Banks, 1892 | Pond Water Spiders | 1 | Species | Taxom |
| Demodecidae Nicolet, 1855 | Follicle mites | 4 | Species | Taxom |
| Dermanyssidae Kolenati, 1859 | Dermanyssid mites | 2 | Species | Taxom |
| Dermationidae Fain, 1965 | | 1 | Species | Taxom |
| Devonacaridae Norton, 1988 | | 1 | Species | Taxom |
| Dictynidae O. P-Cambridge, 1871 | Dictynid spiders | 2 | Species | Taxom |
| Digamasellidae Evans, 1957 | | 3 | Species | Taxom |
| Dinychidae Berlese, 1916 | | 0 | Species | Taxom |
| Diplogyniidae Trägårdh, 1941 | | 0 | Species | Taxom |
| Dracochelidae Schawaller, ..., 1991 | | 1 | Species | Taxom |
| Dysderidae C. L. Koch, 1837 | Dysderid spiders | 4 | Species | Taxom |
| Entonyssidae Ewing, 1922 | | 0 | Species | Taxom |
| Epidermoptidae Trouessart, 1892 | | 1 | Species | Taxom |
| Epilohmanniidae Oudemans, 1923 | | 1 | Species | Taxom |
| Ereynetidae Schrank, 1776 | | 2 | Species | Taxom |
| Eriophyidae Nalepa, 1898 | Blister mites | 20 | Species | Taxom |
| Erythraeidae Oudemans, 1902 | | 1 | Species | Taxom |
| Eupodidae Strandtmann, 1967 | Eupodid mites | 0 | Species | Taxom |
| Eviphididae Berlese, 1913 | | 0 | Species | Taxom |
| Eylaidae Leach, 1815 | | 0 | Species | Taxom |
| Gabuciniidae Gaud & Atyeo, 1975 | | 0 | Species | Taxom |
| Galeodidae Sundevall, 1833 | | 1 | Species | Taxom |
| Garypidae Simon, 1879 | | 1 | Species | Taxom |
| Glycyphagidae De Geer, 1778 | | 3 | Species | Taxom |
| Gnaphosidae Pocock, 1898 | Flat-bellied ground spiders | 8 | Species | Taxom |
| Halolaelapidae Karg, 1965 | | 2 | Species | Taxom |
| Harpirhynchidae Dubinin, 1957 | | 4 | Species | Taxom |
| Hemisarcoptidae Oudemans, 1904 | | 1 | Species | Taxom |
| Heterozerconidae Berlese, 1892 | | 1 | Species | Taxom |
| Histiostomatidae Berlese, 1897 | | 1 | Species | Taxom |
| Hydrachnidae Leach, 1815 | | 1 | Species | Taxom |
| Hydrodromidae Viets, 1936 | | 1 | Species | Taxom |
| Hydryphantidae Piersig, 1896 | | 6 | Species | Taxom |
| Hygrobatidae Koch, 1842 | | 1 | Species | Taxom |
| Ichthyostomatogasteridae (Sellnick, 1953) | | 0 | Species | Taxom |
| Idiopidae Simon, 1892 | Armored trapdoor spiders | 0 | Species | Taxom |
| Iolinidae Pritchard, 1956 | | 0 | Species | Taxom |
| Ixodidae C. L. Koch, 1844 | Hard Tick | 3 | Species | Taxom |
| Ixodorhynchidae Ewing, 1923 | | 1 | Species | Taxom |
| Johnstonianidae Thor, 1935 | | 1 | Species | Taxom |
| Knemidokoptidae (Lavoipierre ..., 1951) | | 3 | Species | Taxom |
| Kreischeriidae Haase, 1890 | | 1 | Species | Taxom |
| Krendowskiidae Viets, 1926 | | 0 | Species | Taxom |
| Labidostommatidae Oudemans, 1904 | | 0 | Species | Taxom |
| Laelapidae Berlese, 1892 | | 16 | Species | Taxom |
| Laminosioptidae Vitzthum, 1931 | | 1 | Species | Taxom |
| Lebertiidae Thor, 1900 | | 0 | Species | Taxom |
| Leeuwenhoekiidae Womersley, 1944 | Chigger mites | 0 | Species | Taxom |
| Limnesiidae Thor, 1900 | | 4 | Species | Taxom |
| Limnocharidae Grube, 1859 | | 1 | Species | Taxom |
| Linotetranidae Baker & Prit..., 1953 | | 0 | Species | Taxom |
| Linyphiidae Blackwall, 1859 | Dwarf spiders | 15 | Species | Taxom |
| Lordalychidae Grandjean, 1939 | | 0 | Species | Taxom |
| Lycosidae Lehtinen & H..., 1979 | Ground Spiders | 31 | Species | Taxom |
| Macrochelidae Vitzthum, 1930 | | 12 | Species | Taxom |
| Macronyssidae Oudemans, 1936 | Macronyssid Mites | 6 | Species | Taxom |
| Melicharidae (Hirschmann, 1962) | | 2 | Species | Taxom |
| Metagynuridae Baker & Wharton, 1952 | | 1 | Species | Taxom |
| Microdispidae Cross, 1965 | | 0 | Species | Taxom |
| Microtrombidiidae Womersley, 1936 | Micro velvet mites | 1 | Species | Taxom |
| Mideopsidae Koenike, 1910 | | 0 | Species | Taxom |
| Miturgidae Simon, 1885 | Long-legged sac spiders | 1 | Species | Taxom |
| Myobiidae Megnin, 1877 | | 2 | Species | Taxom |
| Myocoptidae Gunther, 1942 | | 0 | Species | Taxom |
| Mysmenidae Petrunkevitch, 1928 | Dwarf cobweb spiders | 1 | Species | Taxom |
| Nanorchestidae Luxton, 1984 | | 0 | Species | Taxom |
| Nemastomatidae Simon, 1872 | | 1 | Species | Taxom |
| Nematalycidae Strenzke, 1954 | | 1 | Species | Taxom |
| Neoacaridae (Motas & Tana..., 1947) | | 1 | Species | Taxom |
| Neobisiidae Chamberlin, 1930 | | 1 | Species | Taxom |
| Neopygmephoridae Cross, 1965 | | 0 | Species | Taxom |
| Nothridae Berlese, 1896 | | 1 | Species | Taxom |
| Ochyroceratidae Fage, 1912 | Midget ground weaver | 1 | Species | Taxom |
| Oecobiidae Blackwall, 1862 | Disc web spider | 1 | Species | Taxom |
| Ologamasidae Ryke, 1962 | | 1 | Species | Taxom |
| Opilioacaridae With, 1902 | | 1 | Species | Taxom |
| Oxidae Viets, 1926 | | 0 | Species | Taxom |
| Oxyopidae Thorell, 1870 | Lynx spiders | 2 | Species | Taxom |
| Pachylaelapidae Berlese, 1913 | | 1 | Species | Taxom |
| Palaeocharinidae Hirst, 1923 | | 7 | Species | Taxom |
| Parantennulidae Willmann, 1940 | | 0 | Species | Taxom |
| Parasitidae Oudemans, 1901 | Beetle Mites | 9 | Species | Taxom |
| Parholaspididae Evans, 1956 | | 1 | Species | Taxom |
| Penthaleidae Oudemans, 1931 | Earth Mites | 2 | Species | Taxom |
| Phalangiidae Latreille, 1802 | Daddy-Long-Legs | 3 | Species | Taxom |
| Phalangodidae Simon, 1879 | | 1 | Species | Taxom |
| Phaulodinychidae (Berlese, 1917) | | 0 | Species | Taxom |
| Philodanidae Kethley, 1977 | | 1 | Species | Taxom |
| Philodromidae Thorell, 1870 | False crab spiders | 3 | Species | Taxom |
| Pholcidae C. L. Koch, 1851 | Carpenter spider | 2 | Species | Taxom |
| Phthiracaridae Perty, 1841 | | 1 | Species | Taxom |
| Phytoptidae Manson, 1970 | | 1 | Species | Taxom |
| Phytoseiidae Berlese, 1916 | Phytoseiid mites | 17 | Species | Taxom |
| Pionidae Thor, 1900 | | 24 | Species | Taxom |
| Pisauridae Simon, 1890 | Big wolf spider | 9 | Species | Taxom |
| Podapolipidae Husband, 1990 | | 2 | Species | Taxom |
| Podocinidae Berlese, 1913 | | 0 | Species | Taxom |
| Polyaspididae Berlese, 1913 | | 1 | Species | Taxom |
| Proctophyllodidae Trouessart &..., 1884 | | 3 | Species | Taxom |
| Protochthoniidae Norton, 1988 | | 1 | Species | Taxom |
| Psorergatidae Womersley, 1941 | | 1 | Species | Taxom |
| Psoroptidae Hering, 1838 | Scab mites | 2 | Species | Taxom |
| Psoroptoididae Gaud, 1958 | | 2 | Species | Taxom |
| Pterolichidae Trouessart, 1899 | | 1 | Species | Taxom |
| Pterygosomatidae Womersley, 1941 | | 1 | Species | Taxom |
| Pyemotidae Newport, 1850 | | 1 | Species | Taxom |
| Pygmephoridae Krczal, 1964 | | 3 | Species | Taxom |
| Pyroglyphidae Cunliffe, 1958 | Dust mites | 5 | Species | Taxom |
| Raphignathidae Kramer, 1877 | | 0 | Species | Taxom |
| Rhagidiidae Zacharda, 1980 | | 0 | Species | Taxom |
| Rhinonyssidae Trouessart, 1895 | | 6 | Species | Taxom |
| Rhodacaridae Oudemans, 1902 | | 3 | Species | Taxom |
| Rosensteiniidae Cooreman, 1954 | | 1 | Species | Taxom |
| Sabaconidae Dresco, 1970 | Sabaconid Harvestmen | 1 | Species | Taxom |
| Salticidae Blackwall, 1842 | Jumping Spider | 50 | Species | Taxom |
| Sarcoptidae Megnin, 1877 | Itch mites | 2 | Species | Taxom |
| Sclerosomatidae Simon, 1879 | Sclerosomatid Harvestmen | 8 | Species | Taxom |
| Scutacaridae Paoli, 1911 | | 0 | Species | Taxom |
| Scytodidae Blackwall, 1864 | Glue spitter | 1 | Species | Taxom |
| Segestriidae Simon, 1893 | Six-eyed Spiders | 1 | Species | Taxom |
| Sicariidae Keyserling, 1880 | Brown recluse spiders | 1 | Species | Taxom |
| Siteroptidae Martin, 1978 | Siteroptid mites | 1 | Species | Taxom |
| Smarididae Kramer, 1878 | | 0 | Species | Taxom |
| Sparassidae Bertkau, 1872 | Giant crab spiders | 2 | Species | Taxom |
| Sperchontidae Thor, 1900 | | 0 | Species | Taxom |
| Stigmaeidae Wood, 1967 | | 3 | Species | Taxom |
| Suidasiidae Hughes, 1948 | | 0 | Species | Taxom |
| Syringobiidae Trouessart, 1897 | | 0 | Species | Taxom |
| Syringophilidae Lavoipierre, 1953 | Quill mites | 2 | Species | Taxom |
| Tanaupodidae Thor, 1935 | | 2 | Species | Taxom |
| Taracidae Schönhofer, 2013 | | 2 | Species | Taxom |
| Tarsocheylidae Berlese, 1904 | | 2 | Species | Taxom |
| Tarsonemidae Kramer, 1877 | Tarsonemid mites | 11 | Species | Taxom |
| Tengellidae (Dahl, 1908) | Tengellid spiders | 1 | Species | Taxom |
| Tenuipalpidae Berlese, 1913 | False spider mites | 3 | Species | Taxom |
| Tetrablemmidae O. P-Cambridge, 1873 | Armored spider | 0 | Species | Taxom |
| Tetragnathidae Menge, 1866 | Elongated Orb Weavers | 9 | Species | Taxom |
| Tetranychidae Donnadieu, 1875 | Spider mites | 23 | Species | Taxom |
| Theridiidae Sundevall, 1833 | Cobweb And Widow Spiders | 14 | Species | Taxom |
| Theridiosomatidae Simon, 1881 | Ray orbweavers | 1 | Species | Taxom |
| Thomisidae Sundevall, 1833 | Crab Spider | 11 | Species | Taxom |
| Torrenticolidae Thor, 1902 | Torrent Mites | 2 | Species | Taxom |
| Trachyuropodidae Kramer, 1881 | | 1 | Species | Taxom |
| Travuniidae Absolon & Kr..., 1932 | | 1 | Species | Taxom |
| Trematuridae Berlese, 1917 | | 4 | Species | Taxom |
| Trombiculidae Ewing, 1929 | Chigger mites | 1 | Species | Taxom |
| Trombidiidae Leach, 1815 | Beer Bahuti | 0 | Species | Taxom |
| Trouessartiidae Gaud, 1957 | | 1 | Species | Taxom |
| Tydeidae Kramer, 1877 | Tydeid mites | 0 | Species | Taxom |
| Uloboridae Thorell, 1869 | Cribellate orb weavers | 2 | Species | Taxom |
| Unionicolidae Oudemans, 1909 | | 8 | Species | Taxom |
| Uroactiniidae Hirschmann &..., 1964 | | 0 | Species | Taxom |
| Urodinychidae Berlese, 1917 | | 3 | Species | Taxom |
| Uropodellidae (Camin, 1955) | | 2 | Species | Taxom |
| Uropodidae Kramer, 1881 | | 1 | Species | Taxom |
| Vaejovidae Thorell, 1876 | | 1 | Species | Taxom |
| Veigaiidae Oudemans, 1939 | | 2 | Species | Taxom |
| Winterschmidtiidae Oudemans, 1923 | | 0 | Species | Taxom |
| Xolalgidae Dubinin, 1953 | | 0 | Species | Taxom |
| Zerconidae Berlese, 1892 | | 0 | Species | Taxom |
