| Subfamily | Archemyobiinae Fain, 1973
| 1 8 | Genus Species |
| Subfamily | Bryobiinae Kono & Papp, 1977 Spider mites | 30 508 | Genera Species |
| Subfamily | Bryoniinae
| 0 0 | Genera Species |
| Subfamily | Ischnothelinae F. O. P.-Cambridge, 1897
| 5 46 | Genera Species |
| Subfamily | Ixamatinae Raven, 1985
| 2 19 | Genera Species |
| Subfamily | Masteriinae Simon, 1889
| 3 54 | Genera Species |
| Subfamily | Nemesiinae Simon, 1892
| 4 128 | Genera Species |
| Subfamily | Pycnothelinae Chamberlin, 1917
| 10 153 | Genera Species |
| Subfamily | Tetranychinae Donnadieu, 1876
| 63 1402 | Genera Species |
| Genus | Acostanychus ♰ Livshits, 1967
| 1 | Species |
| Genus | Allobia Livschitz & Mitrofanov, 1969
| 0 | Species |
| Genus | Armenychus Wainstein, 1960
| 0 | Species |
| Genus | Augeriflechtmannia Kocak & Kemal, 2008
| 0 | Species |
| Genus | Bakerobryobia Hatzinikol & Emmanou, 1993
| 1 | Species |
| Genus | Bryiobia Packard, 1888
| 1 | Species |
| Genus | Bryobiopsis Mitrofanov, 1973
| 0 | Species |
| Genus | Diplonychus Laporte, 1833
| 7 | Species |
| Genus | Dromicimyobia Fain, 1973
| 0 | Species |
| Genus | Eleutheronychus Mitrofanov, 1977
| 0 | Species |
| Genus | Eurytetranychoides Rick, 1950 ⇒ Eurytetranychus
| 2 | Species |
| Genus | Georgiobia Wainstein, 1960
| 18 | Species |
| Genus | Hapalothele Lenz, 1886
| 1 | Species |
| Genus | Heteronychus Canestrini & Fanzago, 1876
| 0 | Species |
| Genus | Homonychus Wainstein, 1960
| 2 | Species |
| Genus | Lindguistiella ♰ Mitrofanov, 1976
| 0 | Species |
| Genus | Macgregorella ♰ Baker & Tuttle, 1972
| 0 | Species |
| Genus | Magdalena Baker & Tuttle, 1994
| 1 | Species |
| Genus | Mc Gregorella, 0
| 1 | Species |
| Genus | Mcgregorella ♰ Baker & Tuttle, 1972
| 3 | Species |
| Genus | Mesotetranychus Reck, 1948
| 3 | Species |
| Genus | Metatetranychoides Wainstein, 1956
| 0 | Species |
| Genus | Mononychellus Wainstein, 1971 ⇒ Schizotetranychus
| 35 | Species |
| Genus | Mononychus Wainstein, 1960
| 19 | Species |
| Genus | Neonidulus Beard & Walter, 2010
| 4 | Species |
| Genus | Neotetranycopsis Bagdall, 1951
| 1 | Species |
| Genus | Noeschizonobiella Tseng, 1990
| 0 | Species |
| Genus | Nuciforella Vacante, 1984 ⇒ Bryobia
| 1 | Species |
| Genus | Periplanobia Livschitz & Mitrofanov, 1969
| 0 | Species |
| Genus | Peritetranychus Ugarov & Nikolsky, 1937
| 2 | Species |
| Genus | Pritchardinychus Wainstein, 1960
| 0 | Species |
| Genus | Pseudonychus Wainstein, 1960
| 0 | Species |
| Genus | Reckiella ♰ Tuttle & Baker, 1968
| 0 | Species |
| Genus | Rhodaxes Kirchner, 1863
| 0 | Species |
| Genus | Sannio Scheuten, 1857
| 1 | Species |
| Genus | Schmiedleinia Oudemans, 1928
| 0 | Species |
| Genus | Schneidarachne ♰ Dunlop & Rössler, 2003
| 1 | Species |
| Genus | Simplinychus McGregor, 1950
| 1 | Species |
| Genus | Swarnanychus Mallik & Kumar, 1998
| 1 | Species |
| Genus | Tacebia Yokoyama, 1929
| 0 | Species |
| Genus | Tenuicrus Womersley, 1940 ⇒ Petrobia
| 1 | Species |
| Genus | Tetranichus Dugès, 1834
| 0 | Species |
| Genus | Tetranychina Banks, 1917 ⇒ Petrobia
| 15 | Species |
| Genus | Tetranycus Walckenaer in Walckenaer & Gervais, 1847
| 0 | Species |
| Genus | Tetronychus Agassiz, 1846
| 0 | Species |
| Genus | Tylonichus
| 0 | Species |
| Genus | Tylonychus Miller, 1966
| 5 | Species |
| Genus | Wainsteiniella Tuttle & Baker, 1968
| 0 | Species |
| Aponychinae (Rimando, 1966) |
| Atrichoproctinae (Flechtmann, 1968) |
| Eurytetranychinae (Reck, 1950) |
| Hystrichonychinae (Pritchard & Baker, 1955) |
| Neophyllobiidae (Southcott, 1957) |
| Tenuipalpidini (Pritchard, 1973) |
| Tenuipalpoidinae (Pritchard & Baker, 1955) |