| Acaridae Latreille, 1802 | Vorratsmilben | 56 | Arten | Taxom |
| Acaronychidae Grandjean, 1932 | | 1 | Art | Taxom |
| Acherontacaridae Cook, 1967 | | 1 | Art | Taxom |
| Achipteriidae Thor, 1929 | | 19 | Arten | Taxom |
| Actinopodidae Simon, 1892 | Falltürspinnen | 1 | Art | Taxom |
| Adelphacaridae Grandjean, 1954 | | 1 | Art | Taxom |
| Aeroglyphidae Zakhvatkin, 1941 | | 1 | Art | Taxom |
| Agelenidae C. L. Koch, 1837 | Trichternetzspinnen | 119 | Arten | Taxom |
| Aleurodamaeidae Paschoal & J..., 1985 | | 1 | Art | Taxom |
| Algophagidae Fain, 1974 | | 1 | Art | Taxom |
| Alicorhagiidae Grandjean, 1939 | | 2 | Arten | Taxom |
| Alloptidae Gaud, 1957 | | 10 | Arten | Taxom |
| Alycidae Canestrini &..., 1877 | | 6 | Arten | Taxom |
| Amaurobiidae Thorell, 1870 | Fensterspinnen | 22 | Arten | Taxom |
| Amblyommidae Banks, 1907 | | 28 | Arten | Taxom |
| Ameridae Grandjean, 1965 | | 3 | Arten | Taxom |
| Amerobelbidae Grandjean, 1954 | | 6 | Arten | Taxom |
| Ameroseiidae Evans, 1961 | | 9 | Arten | Taxom |
| Analgidae Trouessart &..., 1884 | | 29 | Arten | Taxom |
| Anamidae Simon, 1889 | | 0 | Arten | Taxom |
| Anapidae Simon, 1895 | Zwergkugelspinnen | 4 | Arten | Taxom |
| Anisitsiellidae Koenike, 1910 | | 8 | Arten | Taxom |
| Antennophoridae Berlese, 1892 | | 1 | Art | Taxom |
| Anthracomartidae Haase, 1890 | | 1 | Art | Taxom |
| Anyphaenidae Bertkau, 1878 | Zartspinnen | 3 | Arten | Taxom |
| Anystidae Oudemans, 1936 | | 16 | Arten | Taxom |
| Apionacaridae Gaud & Atyeo, 1977 | | 1 | Art | Taxom |
| Araneidae Simon, 1895 | Echte Radnetzspinnen | 97 | Arten | Taxom |
| Argasidae C. L. Koch, 1844 | Lederzecken | 20 | Arten | Taxom |
| Arrenuridae Thor, 1900 | | 40 | Arten | Taxom |
| Ascidae Oudemans, 1905 | | 18 | Arten | Taxom |
| Astegistidae Balogh, 1961 | | 2 | Arten | Taxom |
| Asternoseiidae Valle, 1955 | | 1 | Art | Taxom |
| Atemnidae Chamberlin, 1931 | | 1 | Art | Taxom |
| Athienemanniidae Viets, 1922 | | 1 | Art | Taxom |
| Atopochthoniidae Grandjean, 1949 | | 2 | Arten | Taxom |
| Atopomelidae Fain, 1972 | | 1 | Art | Taxom |
| Aturidae Thor, 1900 | | 25 | Arten | Taxom |
| Atypidae Thorell, 1870 | Tapezierspinnen | 4 | Arten | Taxom |
| Autognetidae Grandjean, 1960 | | 4 | Arten | Taxom |
| Avenzoariidae Oudemans, 1905 | | 17 | Arten | Taxom |
| Barbutiidae Robaux, 1975 | | 1 | Art | Taxom |
| Barychelidae Simon, 1889 | | 1 | Art | Taxom |
| Bdellidae Dugès, 1834 | Schnabelmilben | 27 | Arten | Taxom |
| Belbidae (Willmann, 1931) | | 1 | Art | Taxom |
| Blattisociidae (Garman, 1948) | | 26 | Arten | Taxom |
| Bogatiidae Motas & Tana..., 1948 | | 1 | Art | Taxom |
| Bothriuridae Simon, 1880 | | 1 | Art | Taxom |
| Brachychthoniidae Thor, 1934 | | 36 | Arten | Taxom |
| Buthidae C. L. Koch, 1837 | Skorpione | 5 | Arten | Taxom |
| Caeculidae Berlese, 1883 | | 2 | Arten | Taxom |
| Caleremaeidae Grandjean, 1965 | | 1 | Art | Taxom |
| Caligonellidae Grandjean, 1944 | | 2 | Arten | Taxom |
| Caloppiidae (Balogh, 1960) | | 1 | Art | Taxom |
| Calyptostomatidae Oudemans, 1923 | | 2 | Arten | Taxom |
| Camerobiidae Southcott, 1957 | | 4 | Arten | Taxom |
| Camisiidae Oudemans, 1900 | | 1 | Art | Taxom |
| Canestriniidae Berlese, 1884 | | 20 | Arten | Taxom |
| Carabodidae Koch, 1837 | | 34 | Arten | Taxom |
| Carpoglyphidae Oudemans, 1923 | | 3 | Arten | Taxom |
| Celaenopsidae Berlese, 1892 | | 2 | Arten | Taxom |
| Cepheusidae Berlese, 1896 | | 3 | Arten | Taxom |
| Ceratoppiidae (Kunst, 1971) | | 3 | Arten | Taxom |
| Ceratozetidae Jacot, 1925 | | 45 | Arten | Taxom |
| Chaetodactylidae Zakhvatkin, 1941 | | 4 | Arten | Taxom |
| Chamobatidae Thor, 1937 | | 12 | Arten | Taxom |
| Cheiracanthiidae Wagner, 1887 | Dornfingerspinnen | 2 | Arten | Taxom |
| Cheiridiidae Hansen, 1893 | | 2 | Arten | Taxom |
| Cheliferidae Risso, 1826 | | 20 | Arten | Taxom |
| Chernetidae Menge, 1855 | | 24 | Arten | Taxom |
| Cheyletidae Leach, 1815 | Raubmilben | 30 | Arten | Taxom |
| Chirodiscidae Trouessart, 1892 | | 2 | Arten | Taxom |
| Chortoglyphidae Berlese, 1897 | | 1 | Art | Taxom |
| Chthoniidae Daday, 1888 | | 89 | Arten | Taxom |
| Clubionidae Wagner, 1887 | Sackspinnen | 38 | Arten | Taxom |
| Cocceupodidae Jesionowska, 2010 | | 3 | Arten | Taxom |
| Corinnidae Karsch, 1880 | Dunkelsackspinnen | 17 | Arten | Taxom |
| Cosmochthoniidae Grandjean, 1946 | | 4 | Arten | Taxom |
| Crotoniidae Thorell, 1876 | | 14 | Arten | Taxom |
| Cryptognathidae Luxton, 1973 | | 3 | Arten | Taxom |
| Ctenacaridae Grandjean, 1954 | | 1 | Art | Taxom |
| Ctenizidae Thorell, 1887 | Eigentliche Falltürspinnen | 5 | Arten | Taxom |
| Ctenobelbidae Grandjean, 1965 | | 7 | Arten | Taxom |
| Cunaxidae Thor, 1902 | | 13 | Arten | Taxom |
| Cybaeidae Banks, 1892 | Gebirgstrichterspinnen | 7 | Arten | Taxom |
| Cymbaeremaeidae Sellnick, 1928 | | 4 | Arten | Taxom |
| Cyrtaucheniidae Simon, 1892 | | 8 | Arten | Taxom |
| Cytoditidae Oudemans, 1908 | | 1 | Art | Taxom |
| Daesiidae Kraepelin, 1899 | | 2 | Arten | Taxom |
| Damaeidae Berlese, 1896 | | 34 | Arten | Taxom |
| Damaeolidae Grandjean, 1965 | | 4 | Arten | Taxom |
| Demodecidae Nicolet, 1855 | | 8 | Arten | Taxom |
| Dermanyssidae Kolenati, 1859 | | 9 | Arten | Taxom |
| Dermationidae Fain, 1965 | | 5 | Arten | Taxom |
| Dermoglyphidae Mégnin & Tro..., 1884 | | 3 | Arten | Taxom |
| Desidae Pocock, 1895 | Gezeitenspinnen | 0 | Arten | Taxom |
| Diarthrophallidae Trägårdh, 1946 | | 1 | Art | Taxom |
| Dicranolasmatidae Simon, 1879 | | 11 | Arten | Taxom |
| Dictynidae O. P-Cambridge, 1871 | Kräuselspinnen | 50 | Arten | Taxom |
| Digamasellidae Evans, 1957 | | 8 | Arten | Taxom |
| Diguetidae F. O. Pickar..., 1899 | | 1 | Art | Taxom |
| Diplogyniidae Trägårdh, 1941 | | 1 | Art | Taxom |
| Dipluridae Simon, 1889 | Doppelschwanzspinnen | 1 | Art | Taxom |
| Diptilomiopidae Boczek, 1964 | | 10 | Arten | Taxom |
| Dolichocybidae Mahunka, 1970 | | 1 | Art | Taxom |
| Dwigubskyiidae Vitzthum, 1941 | | 1 | Art | Taxom |
| Dysderidae C. L. Koch, 1837 | Sechsaugen | 105 | Arten | Taxom |
| Echimyopodidae Fain, 1967 | | 1 | Art | Taxom |
| Eniochthoniidae Grandjean, 1947 | | 1 | Art | Taxom |
| Epicriidae Berlese, 1885 | | 4 | Arten | Taxom |
| Epidermoptidae Trouessart, 1892 | | 4 | Arten | Taxom |
| Epilohmanniidae Oudemans, 1923 | | 4 | Arten | Taxom |
| Epimyodicidae Fain, Lukosc..., 1982 | | 1 | Art | Taxom |
| Eremaeidae Oudemans, 1900 | | 11 | Arten | Taxom |
| Eremobelbidae Balogh, 1961 | | 1 | Art | Taxom |
| Eremulidae Grandjean, 1965 | | 2 | Arten | Taxom |
| Eresidae C. L. Koch, 1851 | Röhrenspinnen | 14 | Arten | Taxom |
| Ereynetidae Schrank, 1776 | | 12 | Arten | Taxom |
| Eriophyidae Nalepa, 1898 | Gallmilben | 243 | Arten | Taxom |
| Erythracaridae (Oudemans, 1936) | | 1 | Art | Taxom |
| Erythraeidae Oudemans, 1902 | | 45 | Arten | Taxom |
| Eukoeneniidae Condé, 1965 | | 12 | Arten | Taxom |
| Eulohmanniidae Grandjean, 1931 | | 1 | Art | Taxom |
| Eupalopsellidae Willmann, 1952 | | 1 | Art | Taxom |
| Euphthiracaridae Jacot, 1930 | | 7 | Arten | Taxom |
| Eupodidae Strandtmann, 1967 | Laufmilben | 9 | Arten | Taxom |
| Euscorpiidae Laurie, 1896 | | 15 | Arten | Taxom |
| Eustathiidae Oudemans, 1905 | | 4 | Arten | Taxom |
| Eviphididae Berlese, 1913 | | 14 | Arten | Taxom |
| Eylaidae Leach, 1815 | | 5 | Arten | Taxom |
| Falculiferidae Oudemans, 1905 | | 2 | Arten | Taxom |
| Fedrizziidae Trägårdh, 1937 | | 1 | Art | Taxom |
| Feltriidae Viets, 1926 | | 7 | Arten | Taxom |
| Filistatidae Ausserer, 1867 | Lochröhrenspinnen | 6 | Arten | Taxom |
| Freyanidae Dubinin, 1953 | | 9 | Arten | Taxom |
| Gabuciniidae Gaud & Atyeo, 1975 | | 7 | Arten | Taxom |
| Galumnidae Jacot, 1925 | | 27 | Arten | Taxom |
| Garypidae Simon, 1879 | | 6 | Arten | Taxom |
| Garypinidae Daday, 1888 | | 2 | Arten | Taxom |
| Gaudoglyphidae (W.A. Bruce &..., 1976) | | 1 | Art | Taxom |
| Geogarypidae Chamberlin, 1930 | | 3 | Arten | Taxom |
| Glycyphagidae De Geer, 1778 | | 18 | Arten | Taxom |
| Gnaphosidae Pocock, 1898 | Glattbauchspinnen | 254 | Arten | Taxom |
| Gustaviidae Oudemans, 1900 | | 4 | Arten | Taxom |
| Gymnodamaeidae Grandjean, 1954 | | 9 | Arten | Taxom |
| Hahniidae Bertkau, 1878 | Bodenspinnen | 20 | Arten | Taxom |
| Halacaridae Murray, 1877 | Meeresmilben | 70 | Arten | Taxom |
| Halarachnidae Oudemans, 1906 | | 2 | Arten | Taxom |
| Halolaelapidae Karg, 1965 | | 6 | Arten | Taxom |
| Haplochthoniidae Van der Hammen, 1959 | | 2 | Arten | Taxom |
| Haplozetidae Grandjean, 1936 | | 6 | Arten | Taxom |
| Harpirhynchidae Dubinin, 1957 | | 2 | Arten | Taxom |
| Hemileiidae (J. & P. Balogh, 1984) | | 6 | Arten | Taxom |
| Hemisarcoptidae Oudemans, 1904 | | 2 | Arten | Taxom |
| Hermanniellidae Grandjean, 1934 | | 4 | Arten | Taxom |
| Hermanniidae Sellnick, 1928 | | 3 | Arten | Taxom |
| Heterochthoniidae (Grandjean, 1954) | | 1 | Art | Taxom |
| Heteropsoridae Oudemans, 1908 | | 1 | Art | Taxom |
| Hexathelidae Simon, 1892 | | 1 | Art | Taxom |
| Histiostomatidae Berlese, 1897 | | 12 | Arten | Taxom |
| Homocaligidae Wood, 1969 | | 1 | Art | Taxom |
| Hormuridae Laurie, 1896 | | 0 | Arten | Taxom |
| Humerobatidae Grandjean, 1970 | | 2 | Arten | Taxom |
| Hungarobelbidae (Miko & Travé, 1996) | | 1 | Art | Taxom |
| Hungarohydracaridae Motas & Tana..., 1959 | | 1 | Art | Taxom |
| Hydrachnidae Leach, 1815 | | 11 | Arten | Taxom |
| Hydrodromidae Viets, 1936 | | 3 | Arten | Taxom |
| Hydrovolziidae Thor, 1905 | | 2 | Arten | Taxom |
| Hydrozetidae Grandjean, 1954 | | 2 | Arten | Taxom |
| Hydryphantidae Piersig, 1896 | | 34 | Arten | Taxom |
| Hygrobatidae Koch, 1842 | | 26 | Arten | Taxom |
| Hypochthoniidae Berlese, 1910 | | 3 | Arten | Taxom |
| Hypoderatidae (Murray, 1877) | | 4 | Arten | Taxom |
| Ichthyostomatogasteridae (Sellnick, 1953) | | 1 | Art | Taxom |
| Iolinidae Pritchard, 1956 | | 8 | Arten | Taxom |
| Ischyropsalididae Simon, 1879 | Schneckenkanker | 19 | Arten | Taxom |
| Ixodidae C. L. Koch, 1844 | Holzböcke | 32 | Arten | Taxom |
| Ixodorhynchidae Ewing, 1923 | | 2 | Arten | Taxom |
| Johnstonianidae Thor, 1935 | | 4 | Arten | Taxom |
| Knemidokoptidae (Lavoipierre ..., 1951) | | 7 | Arten | Taxom |
| Kodiakellidae Hammer, 1967 | | 1 | Art | Taxom |
| Kramerellidae Gaud & Mouchet, 1961 | | 9 | Arten | Taxom |
| Krendowskiidae Viets, 1926 | | 1 | Art | Taxom |
| Kytoditidae (Oudemans, 1908) | | 1 | Art | Taxom |
| Labidostommatidae Oudemans, 1904 | | 14 | Arten | Taxom |
| Laelapidae Berlese, 1892 | | 124 | Arten | Taxom |
| Laminosioptidae Vitzthum, 1931 | | 1 | Art | Taxom |
| Lamponidae Simon, 1893 | | 1 | Art | Taxom |
| Larcidae Harvey, 1992 | | 1 | Art | Taxom |
| Lebertiidae Thor, 1900 | | 26 | Arten | Taxom |
| Leeuwenhoekiidae Womersley, 1944 | | 0 | Arten | Taxom |
| Leptonetidae Simon, 1890 | | 10 | Arten | Taxom |
| Liacaridae Sellnick, 1928 | | 14 | Arten | Taxom |
| Licneremaeidae Grandjean, 1931 | | 2 | Arten | Taxom |
| Licnobelbidae (Grandjean, 1965) | | 2 | Arten | Taxom |
| Licnodamaeidae (Grandjean, 1954) | | 7 | Arten | Taxom |
| Liebstadiidae J. & P. Balogh, 1984 | | 4 | Arten | Taxom |
| Limnesiidae Thor, 1900 | | 10 | Arten | Taxom |
| Limnocharidae Grube, 1859 | | 1 | Art | Taxom |
| Linotetranidae Baker & Prit..., 1953 | | 1 | Art | Taxom |
| Linyphiidae Blackwall, 1859 | Baldachinspinnen | 686 | Arten | Taxom |
| Liocranidae Simon, 1897 | Bodenspinnen | 31 | Arten | Taxom |
| Liodidae Grandjean, 1954 | | 2 | Arten | Taxom |
| Listrophoridae Mégnin & Tro..., 1884 | | 7 | Arten | Taxom |
| Lohmanniidae Berlese, 1916 | | 4 | Arten | Taxom |
| Lordalychidae Grandjean, 1939 | | 1 | Art | Taxom |
| Lycosidae Lehtinen & H..., 1979 | Wolfspinnen | 150 | Arten | Taxom |
| Machuellidae Balogh, 1983 | | 2 | Arten | Taxom |
| Macrochelidae Vitzthum, 1930 | | 45 | Arten | Taxom |
| Macronyssidae Oudemans, 1936 | | 10 | Arten | Taxom |
| Malaconothridae Berlese, 1916 | | 8 | Arten | Taxom |
| Melicharidae (Hirschmann, 1962) | | 4 | Arten | Taxom |
| Mesoplophoridae Ewing, 1917 | | 2 | Arten | Taxom |
| Messoracaridae Kethley, 1977 | | 1 | Art | Taxom |
| Metagynuridae Baker & Wharton, 1952 | | 1 | Art | Taxom |
| Micreremidae Grandjean, 1954 | | 3 | Arten | Taxom |
| Microdispidae Cross, 1965 | | 3 | Arten | Taxom |
| Microtrombidiidae Womersley, 1936 | | 28 | Arten | Taxom |
| Microzetidae Grandjean, 1936 | | 9 | Arten | Taxom |
| Mideopsidae Koenike, 1910 | | 3 | Arten | Taxom |
| Mimetidae Simon, 1881 | Spinnenfresser | 8 | Arten | Taxom |
| Miturgidae Simon, 1885 | Dornfingerspinnen | 18 | Arten | Taxom |
| Mochlozetidae Grandjean, 1960 | | 1 | Art | Taxom |
| Momoniidae Viets, 1926 | | 3 | Arten | Taxom |
| Mycobatidae Grandjean, 1954 | | 3 | Arten | Taxom |
| Myobiidae Megnin, 1877 | | 12 | Arten | Taxom |
| Myocoptidae Gunther, 1942 | | 4 | Arten | Taxom |
| Mysmenidae Petrunkevitch, 1928 | Kleinkugelspinnen | 4 | Arten | Taxom |
| Nanhermanniidae Sellnick, 1928 | | 6 | Arten | Taxom |
| Nanorchestidae Luxton, 1984 | | 4 | Arten | Taxom |
| Nemastomatidae Simon, 1872 | Fadenkanker | 28 | Arten | Taxom |
| Nenteriidae Hirschmann, 1979 | | 1 | Art | Taxom |
| Neoacaridae (Motas & Tana..., 1947) | | 1 | Art | Taxom |
| Neobisiidae Chamberlin, 1930 | Moosskorpione | 105 | Arten | Taxom |
| Neoliodidae (Sellnick, 1928) | | 6 | Arten | Taxom |
| Neopygmephoridae Cross, 1965 | | 10 | Arten | Taxom |
| Neothrombiidae Feider, 1959 | | 2 | Arten | Taxom |
| Nesticidae Simon, 1894 | Höhlenspinnen | 19 | Arten | Taxom |
| Niphocepheidae Travé, 1959 | | 1 | Art | Taxom |
| Nosybeidae Mahunka, 1993 | | 1 | Art | Taxom |
| Nothridae Berlese, 1896 | | 8 | Arten | Taxom |
| Ochyroceratidae Fage, 1912 | Bodensechsaugenspinnen | 1 | Art | Taxom |
| Oecobiidae Blackwall, 1862 | Scheibennetzspinnen | 6 | Arten | Taxom |
| Ologamasidae Ryke, 1962 | | 37 | Arten | Taxom |
| Olpiidae Banks, 1895 | | 6 | Arten | Taxom |
| Oonopidae Simon, 1890 | Zwergsechsaugenspinnen | 15 | Arten | Taxom |
| Opilioacaridae With, 1902 | | 2 | Arten | Taxom |
| Oplitidae Johnston, 1968 | | 1 | Art | Taxom |
| Oppiidae Sellnick, 1937 | | 56 | Arten | Taxom |
| Oribatellidae Jacot, 1925 | | 27 | Arten | Taxom |
| Oribatulidae Thor, 1929 | | 29 | Arten | Taxom |
| Oribellidae (Kunst, 1971) | | 3 | Arten | Taxom |
| Oribotritiidae Grandjean, 1954 | | 8 | Arten | Taxom |
| Oxidae Viets, 1926 | | 8 | Arten | Taxom |
| Oxyopidae Thorell, 1870 | Luchsspinnen | 8 | Arten | Taxom |
| Pachylaelapidae Berlese, 1913 | | 31 | Arten | Taxom |
| Palpimanidae Thorell, 1870 | Tasterfußspinnen | 1 | Art | Taxom |
| Paracharontidae Weygoldt, 1996 | | 1 | Art | Taxom |
| Parakalummidae Grandjean, 1936 | | 2 | Arten | Taxom |
| Parantennulidae Willmann, 1940 | | 1 | Art | Taxom |
| Parasitidae Oudemans, 1901 | Käfermilben | 79 | Arten | Taxom |
| Parholaspididae Evans, 1956 | | 3 | Arten | Taxom |
| Parhypochthoniidae Grandjean, 1932 | | 1 | Art | Taxom |
| Passalozetidae Grandjean, 1954 | | 5 | Arten | Taxom |
| Pediculochelidae Lavoipierre, 1946 | | 1 | Art | Taxom |
| Penthaleidae Oudemans, 1931 | Sandmilben | 8 | Arten | Taxom |
| Penthalodidae Strandtmann, 1964 | | 2 | Arten | Taxom |
| Perlohmanniidae Grandjean, 1954 | | 1 | Art | Taxom |
| Phalangiidae Latreille, 1802 | Schneider | 62 | Arten | Taxom |
| Phalangodidae Simon, 1879 | | 5 | Arten | Taxom |
| Phaulodinychidae (Berlese, 1917) | | 6 | Arten | Taxom |
| Phenopelopidae Petrunkevitch, 1955 | | 22 | Arten | Taxom |
| Pheroliodidae Paschoal, 1987 | | 1 | Art | Taxom |
| Philodromidae Thorell, 1870 | Laufspinnen | 53 | Arten | Taxom |
| Pholcidae C. L. Koch, 1851 | Zitterspinnen | 13 | Arten | Taxom |
| Phthiracaridae Perty, 1841 | | 42 | Arten | Taxom |
| Phytoptidae Manson, 1970 | | 13 | Arten | Taxom |
| Phytoseiidae Berlese, 1916 | | 105 | Arten | Taxom |
| Pimoidae Wunderlich, 1986 | | 5 | Arten | Taxom |
| Pionidae Thor, 1900 | | 28 | Arten | Taxom |
| Pisauridae Simon, 1890 | Jagdspinnen | 8 | Arten | Taxom |
| Plateremaeidae Trägårdh, 1931 | | 1 | Art | Taxom |
| Podapolipidae Husband, 1990 | | 8 | Arten | Taxom |
| Podocinidae Berlese, 1913 | | 2 | Arten | Taxom |
| Polyaspididae Berlese, 1913 | | 13 | Arten | Taxom |
| Polyaspinidae (Tragärdh, 1941) | | 2 | Arten | Taxom |
| Polypterozetidae Grandjean, 1959 | | 1 | Art | Taxom |
| Pontarachnidae Koenike, 1910 | | 8 | Arten | Taxom |
| Proctophyllodidae Trouessart &..., 1884 | | 37 | Arten | Taxom |
| Protoplophoridae (Ewing, 1917) | | 6 | Arten | Taxom |
| Protoribatidae J. & P. Balogh, 1984 | | 9 | Arten | Taxom |
| Pseudocheylidae Oudemans, 1909 | | 1 | Art | Taxom |
| Pseudoppiidae (Mahunka, 1975) | | 1 | Art | Taxom |
| Psorergatidae Womersley, 1941 | | 4 | Arten | Taxom |
| Psoroptidae Hering, 1838 | Räudemilben | 8 | Arten | Taxom |
| Psoroptoididae Gaud, 1958 | | 5 | Arten | Taxom |
| Pterolichidae Trouessart, 1899 | | 24 | Arten | Taxom |
| Pteronyssidae Oudemans, 1941 | | 15 | Arten | Taxom |
| Pterygosomatidae Womersley, 1941 | Geckomilben | 3 | Arten | Taxom |
| Ptiloxenidae Gaud, 1982 | | 5 | Arten | Taxom |
| Punctoribatidae Thor, 1937 | | 15 | Arten | Taxom |
| Pyemotidae Newport, 1850 | | 4 | Arten | Taxom |
| Pygmephoridae Krczal, 1964 | | 3 | Arten | Taxom |
| Pyroglyphidae Cunliffe, 1958 | | 7 | Arten | Taxom |
| Quadroppiidae Balogh, 1983 | | 11 | Arten | Taxom |
| Raphignathidae Kramer, 1877 | | 8 | Arten | Taxom |
| Rhagidiidae Zacharda, 1980 | | 23 | Arten | Taxom |
| Rhinonyssidae Trouessart, 1895 | | 3 | Arten | Taxom |
| Rhodacaridae Oudemans, 1902 | | 7 | Arten | Taxom |
| Rosensteiniidae Cooreman, 1954 | | 1 | Art | Taxom |
| Sabaconidae Dresco, 1970 | | 1 | Art | Taxom |
| Salticidae Blackwall, 1842 | Springspinnen | 251 | Arten | Taxom |
| Sarcoptidae Megnin, 1877 | Krätzemilben | 8 | Arten | Taxom |
| Scheloribatidae Jacot, 1935 | | 12 | Arten | Taxom |
| Sclerosomatidae Simon, 1879 | Kammkrallenkanker | 33 | Arten | Taxom |
| Scorpionidae Pierre André..., 1802 | | 3 | Arten | Taxom |
| Scutacaridae Paoli, 1911 | | 43 | Arten | Taxom |
| Scutoverticidae Grandjean, 1954 | | 6 | Arten | Taxom |
| Scytodidae Blackwall, 1864 | Leimschleuderspinnen | 5 | Arten | Taxom |
| Segestriidae Simon, 1893 | Fischernetzspinnen | 11 | Arten | Taxom |
| Seiodidae Kethley, 1977 | | 2 | Arten | Taxom |
| Sejidae Berlese, 1885 | | 2 | Arten | Taxom |
| Selenopidae Simon, 1897 | | 1 | Art | Taxom |
| Sicariidae Keyserling, 1880 | Geigenspinnen | 4 | Arten | Taxom |
| Sironidae Simon, 1879 | | 4 | Arten | Taxom |
| Siteroptidae Martin, 1978 | | 3 | Arten | Taxom |
| Smarididae Kramer, 1878 | | 7 | Arten | Taxom |
| Sparassidae Bertkau, 1872 | Huschspinnen | 9 | Arten | Taxom |
| Sperchontidae Thor, 1900 | | 25 | Arten | Taxom |
| Sphaerochthoniidae Grandjean, 1947 | | 1 | Art | Taxom |
| Sphaerolichidae Berlese, 1913 | | 1 | Art | Taxom |
| Spinturnicidae Oudemans, 1902 | Flughautmilben | 7 | Arten | Taxom |
| Steganacaridae (Niedbała, 1986) | | 2 | Arten | Taxom |
| Stigmaeidae Wood, 1967 | | 31 | Arten | Taxom |
| Stigmocheylidae (Kethley, 1990) | | 1 | Art | Taxom |
| Suctobelbidae Jacot, 1938 | | 21 | Arten | Taxom |
| Suidasiidae Hughes, 1948 | | 3 | Arten | Taxom |
| Syarinidae Chamberlin, 1930 | | 6 | Arten | Taxom |
| Synaphridae Wunderlich, 1986 | | 1 | Art | Taxom |
| Syringobiidae Trouessart, 1897 | | 13 | Arten | Taxom |
| Syringophilidae Lavoipierre, 1953 | | 5 | Arten | Taxom |
| Tanaupodidae Thor, 1935 | | 7 | Arten | Taxom |
| Tarsocheylidae Berlese, 1904 | | 4 | Arten | Taxom |
| Tarsonemidae Kramer, 1877 | Fadenfußmilben | 34 | Arten | Taxom |
| Tectocepheidae Grandjean, 1954 | | 5 | Arten | Taxom |
| Tegeocranellidae P. Balogh, 1987 | | 1 | Art | Taxom |
| Tegoribatidae Grandjean, 1954 | | 5 | Arten | Taxom |
| Tenuialidae Jacot, 1929 | | 2 | Arten | Taxom |
| Tenuipalpidae Berlese, 1913 | Falsche Spinnmilben | 23 | Arten | Taxom |
| Tetragnathidae Menge, 1866 | Dickkieferspinnen | 33 | Arten | Taxom |
| Tetranychidae Donnadieu, 1875 | Spinnmilben | 98 | Arten | Taxom |
| Teutoniidae Koenike, 1910 | | 1 | Art | Taxom |
| Theraphosidae Thorell, 1870 | Vogelspinne | 2 | Arten | Taxom |
| Theridiidae Sundevall, 1833 | Kugelspinnen | 182 | Arten | Taxom |
| Theridiosomatidae Simon, 1881 | Zwergkreuzspinnen | 1 | Art | Taxom |
| Thomisidae Sundevall, 1833 | Krabbenspinnen | 128 | Arten | Taxom |
| Thyrisomidae Grandjean, 1953 | | 2 | Arten | Taxom |
| Thysanocercidae Atyeo & Pete..., 1972 | | 1 | Art | Taxom |
| Titanoecidae Lehtinen, 1967 | Kalksteinspinnen | 12 | Arten | Taxom |
| Torrenticolidae Thor, 1902 | | 28 | Arten | Taxom |
| Trachelidae Simon, 1897 | Glattbeinspinnen | 1 | Art | Taxom |
| Trachyuropodidae Kramer, 1881 | | 24 | Arten | Taxom |
| Travuniidae Absolon & Kr..., 1932 | | 15 | Arten | Taxom |
| Trematuridae Berlese, 1917 | | 16 | Arten | Taxom |
| Trhypochthoniidae Willmann, 1931 | | 5 | Arten | Taxom |
| Triaenonychidae Sörensen, 1886 | | 1 | Art | Taxom |
| Triasacaridae | | 2 | Arten | Taxom |
| Triophtydeidae (André, 1980) | | 4 | Arten | Taxom |
| Trizetidae Ewing, 1917 | | 1 | Art | Taxom |
| Trochanteriidae Karsch, 1879 | | 0 | Arten | Taxom |
| Trogulidae Sundevall, 1833 | Brettkanker | 24 | Arten | Taxom |
| Trombellidae Thor, 1935 | | 3 | Arten | Taxom |
| Trombiculidae Ewing, 1929 | Herbstmilben | 9 | Arten | Taxom |
| Trombidiidae Leach, 1815 | Laufmilben | 37 | Arten | Taxom |
| Trouessartiidae Gaud, 1957 | | 12 | Arten | Taxom |
| Tydeidae Kramer, 1877 | Staubmilben | 44 | Arten | Taxom |
| Uloboridae Thorell, 1869 | Kräuselradnetzspinnen | 10 | Arten | Taxom |
| Unduloribatidae Kunst, 1971 | | 1 | Art | Taxom |
| Unionicolidae Oudemans, 1909 | | 19 | Arten | Taxom |
| Urodinychidae Berlese, 1917 | | 25 | Arten | Taxom |
| Uropodidae Kramer, 1881 | | 25 | Arten | Taxom |
| Varroidae Delfinado & ..., 1974 | | 2 | Arten | Taxom |
| Veigaiidae Oudemans, 1939 | | 7 | Arten | Taxom |
| Wettinidae Cook, 1956 | | 1 | Art | Taxom |
| Winterschmidtiidae Oudemans, 1923 | | 8 | Arten | Taxom |
| Withiidae Chamberlin, 1931 | | 2 | Arten | Taxom |
| Xenillidae Woolley & Hi..., 1966 | | 5 | Arten | Taxom |
| Xolalgidae Dubinin, 1953 | | 13 | Arten | Taxom |
| Zerconidae Berlese, 1892 | | 27 | Arten | Taxom |
| Zetomotrichidae Grandjean, 1934 | | 2 | Arten | Taxom |
| Zetorchestidae Michael, 1898 | | 5 | Arten | Taxom |
| Zodariidae Thorell, 1881 | Ameisenjäger | 37 | Arten | Taxom |
| Zoridae F. O. P-Camb..., 1893 | Wanderspinnen | 9 | Arten | Taxom |
| Zoropsidae Bertkau, 1882 | Kräuseljagdspinnen | 3 | Arten | Taxom |