| Oligonychus (Homonychus) meifengensis Lo & Ho, 1989 | |
| Oligonychus (Homonychus) peruvianus McGregor, 1917 | Decorator crab |
| Oligonychus (Homonychus) subtropicus Tseng, 1980 | |
| Oligonychus (Neonychus) litchii (Lo & Ho, 1989) | ⇒ Neonychus litchii Lo & Ho, 1989 |
| Oligonychus (Oligonychus) acugni Livshits, 1968 | |
| Oligonychus (Oligonychus) akitanus S. Ehara, 1978 | |
| Oligonychus (Oligonychus) alpinus McGregor, 1936 | |
| Oligonychus (Oligonychus) annonicus McGregor, 1955 | |
| Oligonychus (Oligonychus) apohadrus Meyer, 1987 | |
| Oligonychus (Oligonychus) araneum Davis, 1968 | Grasswebbing mite |
| Oligonychus (Oligonychus) bambusae Karuppuchamy..., 1988 | |
| Oligonychus (Oligonychus) barbatae Meyer, 1987 | |
| Oligonychus (Oligonychus) bicolor Banks, 1894 | Oak mite |
| Oligonychus (Oligonychus) biharensis Hirst, 1924 ..., 1994 | |
| Oligonychus (Oligonychus) brevipodus Targioni Toz..., 1878 | |
| Oligonychus (Oligonychus) bruneri Livshits, 1968 | |
| Oligonychus (Oligonychus) buschi Reck, 1956 | |
| Oligonychus (Oligonychus) calicicola (Knihinicki &..., 1999) | ⇒ Oligonychus brevipodus Targioni Toz..., 1878 |
| Oligonychus (Oligonychus) campestris Meyer, 1987 | |
| Oligonychus (Oligonychus) castrensis Meyer, 1987 | |
| Oligonychus (Oligonychus) changi Tseng, 1980 | |
| Oligonychus (Oligonychus) coffeae Nietner, 1861 | Red coffee mite |
| Oligonychus (Oligonychus) comptus Meyer & Bolland, 1984 | |
| Oligonychus (Oligonychus) coniferarum McGregor, 1950 | Conifer spider mite |
| Oligonychus (Oligonychus) cubensis Livshits, 1968 | |
| Oligonychus (Oligonychus) dactyloni Smiley & Baker, 1995 | |
| Oligonychus (Oligonychus) digitatus Davis, 1966 | Grasswebbing mite |
| Oligonychus (Oligonychus) ephamnus Beard & Walter, 2003 | |
| Oligonychus (Oligonychus) etiennei Gutiérrez, 1982 | |
| Oligonychus (Oligonychus) festucolus Beard & Walter, 2003 | |
| Oligonychus (Oligonychus) flechtmanni Tuttle, Bake..., 1977 | Coromandel shrimp |
| Oligonychus (Oligonychus) gotohi Ehara, 1999 | |
| Oligonychus (Oligonychus) grypus Baker & Prit..., 1960 | African sugarcane spider mite |
| Oligonychus (Oligonychus) gutierrezi Parsi, 1979 | |
| Oligonychus (Oligonychus) ilicis McGregor, 1917 | Coffee red mite |
| Oligonychus (Oligonychus) indicus Hirst, 1923 ..., 1994 | Bigtooth rock crab |
| Oligonychus (Oligonychus) iseilemae Hirst, 1924 | Yellow crab |
| Oligonychus (Oligonychus) jiangxiensis Ma & Yuan, 1980 | |
| Oligonychus (Oligonychus) longipenis McGregor, 1950 | |
| Oligonychus (Oligonychus) mangiferus (Rahman & Sapra, 1940) | ⇒ Oligonychus vitis Zaher & Shehata, 1965 |
| Oligonychus (Oligonychus) manishi Gupta, 1979 | |
| Oligonychus (Oligonychus) menezesi Flechtmann, 1981 | |
| Oligonychus (Oligonychus) metasequoiae Kuang-Haiyua, 1992 | |
| Oligonychus (Oligonychus) milleri McGregor, 1950 | Pine spider mite |
| Oligonychus (Oligonychus) obliquus Ehara & Masaki, 2001 | |
| Oligonychus (Oligonychus) ocellatus Meyer, 1987 | |
| Oligonychus (Oligonychus) ochoai Meyer & Vargas, 1999 | |
| Oligonychus (Oligonychus) oenotherae Smiley & Baker, 1995 | |
| Oligonychus (Oligonychus) orthius Rimando, 196..., 2003 | |
| Oligonychus (Oligonychus) oryzae Hirst, 1926 ..., 2003 | Stalkeye sumo crab |
| Oligonychus (Oligonychus) perditus Pritchard & ..., 1955 | |
| Oligonychus (Oligonychus) picei Canestrini, 1889 | |
| Oligonychus (Oligonychus) ponmanaiensis Karuppuchamy..., 1987 | Spiny shellback crab |
| Oligonychus (Oligonychus) poutericola Feres & Flec..., 1986 | |
| Oligonychus (Oligonychus) psidium Estebanes & ..., 1968 | American talon crab |
| Oligonychus (Oligonychus) punicae Hirst, 1926 ..., 1994 | Antillean talon crab |
| Oligonychus (Oligonychus) pusillus Ehara & Gotoh, 1987 | |
| Oligonychus (Oligonychus) qilianensis Ma & Yuan, 1982 | Fatfinger marsh crab |
| Oligonychus (Oligonychus) quasipropetes Flechtmann, 1981 | Squareback marsh crab |
| Oligonychus (Oligonychus) sacchari McGregor, 1942 | Sugarcane mite |
| Oligonychus (Oligonychus) santoantoniensis Feres & Flec..., 1995 | |
| Oligonychus (Oligonychus) sapienticolus Gupta, 1976 | |
| Oligonychus (Oligonychus) senegalensis Gutierrez & ..., 1981 | |
| Oligonychus (Oligonychus) solus Lee & Lee, 1997 | |
| Oligonychus (Oligonychus) subtropicus (Tseng, 1980) | ⇒ Oligonychus subtropicus Tseng, 1980 |
| Oligonychus (Oligonychus) tiwakae Gutiérrez, 1978 | Pacific carrier crab |
| Oligonychus (Oligonychus) turbelli Beard & Walter, 2003 | |
| Oligonychus (Oligonychus) ununguis Jacobi, 1905 | Common conifer spider mite |
| Oligonychus (Oligonychus) viranoplos Flechtmann, 1993 | |
| Oligonychus (Oligonychus) vitis Zaher & Shehata, 1965 | |
| Oligonychus (Oligonychus) waltersi Meyer, 1987 | Shouldered purse crab |
| Oligonychus (Oligonychus) zanclopes Beard & Walter, 2003 | |
| Oligonychus (Oligonychus) zeae McGregor, 19..., 1997 | |
| Oligonychus (Pitchardinychus) uruma Ehara, 1966 | |
| Oligonychus (Pritchardinychus) biharensis Hirst, 1924 | Cassava red mite |
| Oligonychus (Pritchardinychus) pritchardi McGregor, 1950 | |
| Oligonychus (Pritchardinychus) uruma (Ehara, 1956) | ⇒ Oligonychus uruma Ehara, 1966 |
| Oligonychus (Reckiella) formosanus Lo, 1969 | |
| Oligonychus (Reckiella) gratus Tseng, 1990 | |
| Oligonychus (Reckiella) krantzi Zaher, Gomaa..., 1982 | |
| Oligonychus (Reckiella) orthius Rimando, 1962 | |
| Oligonychus (Reckiella) pratensis Banks, 1912 | Banks grass mite |
| Oligonychus (Reckiella) sayedi Zaher, Gomaa..., 1982 | |
| Oligonychus (Reckiella) shinkajii (Ehara, 1964) | ⇒ Oligonychus modestus Banks, 1900 |
| Oligonychus (Reckiella) taiwanicus Tseng, 1990 | |
| Oligonychus (Wainsteiniella) mactus Tseng, 1990 | |
| Oligonychus (Wainsteiniella) subnudus McGregor, 1950 | |
| Oligonychus (Wainsteiniella) yuae Tseng, 1975 | Pink purse crab |
| Oligonychus (Wainsteiniella) yui | |
| Oligonychus aceris Shimer, 1869 | |
| Oligonychus afrasiaticus McGregor, 1939 | Date dust mite |
| Oligonychus alni (Koch, 1836) | ⇒ Panonychus ulmi Koch, 1836 |
| Oligonychus amiensis Ehara & Gotoh, 2007 | |
| Oligonychus amnicolus Meyer, 1974 | |
| Oligonychus andrei Gutiérrez, 1966 | |
| Oligonychus andropogonearum Gutiérrez, 1969 | |
| Oligonychus anneke Baker & Prit..., 1962 | |
| Oligonychus anonae Paschoal, 1970 | |
| Oligonychus antherus Rimando, 1962 | |
| Oligonychus aquilinus Meyer, 1974 | |
| Oligonychus bagdasariani Baker & Prit..., 1962 | |
| Oligonychus baipisongis Ma & Yuan, 1976 | |
| Oligonychus beeri Estebanes & ..., 1968 | |
| Oligonychus berlese | |
| Oligonychus bessardi Gutiérrez, 1966 | |
| Oligonychus boudreauxi Pritchard & ..., 1955 | |
| Oligonychus brevipilosus Zacher, 1932 | |
| Oligonychus calcis Baker & Prit..., 1960 | |
| Oligonychus camelliae Ehara & Gotoh, 2007 | |
| Oligonychus castaneae Ehara & Gotoh, 2007 | |
| Oligonychus caucasicus Reck, 1956 | |
| Oligonychus chamaecyparisae (Ma & Yuan, 1976) | ⇒ Oligonychus perditus Pritchard & ..., 1955 |
| Oligonychus chazeaui Gutiérrez, 1970 | |
| Oligonychus chiapensis Estebanes & ..., 1968 | |
| Oligonychus clavatus Ehara, 1959 | |
| Oligonychus conostegiae Tuttle, Bake..., 1974 | |
| Oligonychus cunliffei Pritchard & ..., 1955 | |
| Oligonychus daleae Tuttle, Bake..., 1976 | |
| Oligonychus duncombei Meyer, 1974 | |
| Oligonychus endytus Pritchard & ..., 1955 | |
| Oligonychus exsiccator Zehntner, 1897 | Juva sugarcane leaf mite |
| Oligonychus flexuosus Beer & Lang, 1958 | |
| Oligonychus gambelii Tuttle & Baker, 1968 | |
| Oligonychus gossypii Zacher, 1921 | |
| Oligonychus gramineus McGregor, 1950 | |
| Oligonychus grastis Meyer, 1974 | |
| Oligonychus grewiae Meyer, 1965 | |
| Oligonychus hadrus Pritchard & ..., 1955 | Australian paste shrimp |
| Oligonychus hainanensis Ma, Yuan & Lin, 1979 | |
| Oligonychus hondoensis Ehara, 1954 | Cedar mite |
| Oligonychus hortulanus Meyer, 1974 | |
| Oligonychus hova Gutiérrez, 1966 | |
| Oligonychus imberbei Meyer, 1974 | Velvet horse crab |
| Oligonychus intermedius Meyer, 1964 | Pacific rock crab |
| Oligonychus judithae Meyer, 1974 | Furrowed rock crab |
| Oligonychus juniperi Tuttle, Bake..., 1976 | Graceful crab |
| Oligonychus kadarsani Ehara, 1969 | Hairy rock crab |
| Oligonychus karamatus Ehara, 1956 | Larch spider mite |
| Oligonychus keiferi Tuttle & Baker, 1968 | Pygmy rock crab |
| Oligonychus kobachidzei Reck, 1947 | |
| Oligonychus lagodechii Livshits & M..., 1969 | |
| Oligonychus laricis (Reeves, 1963) | ⇒ Oligonychus karamatus Ehara, 1956 |
| Oligonychus leandrianae Gutiérrez, 1970 | |
| Oligonychus letchworthi Reeves, 1963 | |
| Oligonychus licinus (Baker & Prit..., 1960) | ⇒ Neonychus licinus Baker & Prit..., 1960 |
| Oligonychus livschitzi Mitrofanov &..., 1975 | Coral gall crab |
| Oligonychus longiclavatus Reck, 1953 | |
| Oligonychus longus Chaudhri, Ak..., 1974 | |
| Oligonychus macrostachyus Baker & Tuttle, 1972 | |
| Oligonychus malawiensis Meyer, 1974 | |
| Oligonychus martensis Meyer, 1974 | |
| Oligonychus matthyssei Rimando, 1962 | |
| Oligonychus mcgregori Baker & Prit..., 1953 | |
| Oligonychus megandrosoma Flechtmann &..., 1976 | |
| Oligonychus melinis (Flechtmann, 1971) | ⇒ Oligonychus zeae McGregor, 19..., 1997 |
| Oligonychus mexicanus McGregor & O..., 1953 | |
| Oligonychus mimosae Baker & Prit..., 1962 | |
| Oligonychus mitis Beglyarov & ..., 1973 | |
| Oligonychus modestus Banks, 1900 | |
| Oligonychus monsarrati Gutiérrez, 1967 | |
| Oligonychus muscorum (Koch, 1836) | ⇒ Panonychus ulmi Koch, 1836 |
| Oligonychus nasutus Meyer, 1974 | |
| Oligonychus nelensis Meyer, 1974 | Kahe Point crab |
| Oligonychus neocastaneae Arabuli & Gotoh, 2018 | |
| Oligonychus neoplegas Meyer, 1964 | |
| Oligonychus neopratensis Meyer, 1974 | |
| Oligonychus neotylus Zeity, Srini..., 2016 | |
| Oligonychus newcomeri McGregor, 1950 | |
| Oligonychus nielseni Reeves, 1963 | |
| Oligonychus nuptialis Zacher, 1932 | |
| Oligonychus occidentalis Gutiérrez, 1969 | Chip crab |
| Oligonychus palus Beard, 2008 | |
| Oligonychus pemphisi Gutiérrez, 1970 | Broadback sumo crab |
| Oligonychus penai Rimando, 1962 | Spiketoe sumo crab |
| Oligonychus pennisetum Meyer, 1974 | Truncate sumo crab |
| Oligonychus peronis Pritchard & ..., 1955 | |
| Oligonychus perseae Tuttle, Bake..., 1976 | Persea mite |
| Oligonychus piceae Reck, 1953 | |
| Oligonychus pinaceus Mitrofanov &..., 1975 | |
| Oligonychus pini Tuttle, Bake..., 1976 | |
| Oligonychus pityinus Pritchard & ..., 1955 | |
| Oligonychus platani McGregor, 1950 | |
| Oligonychus plegas Baker & Prit..., 1960 | Granulate shellback crab |
| Oligonychus plicarum De Leon, 1957 | California shellback crab |
| Oligonychus plumosus Estebanes & ..., 1968 | Rough shellback crab |
| Oligonychus potentillae (Koch, 1836) | ⇒ Panonychus ulmi Koch, 1836 |
| Oligonychus primulae Oudemans, 1931 | |
| Oligonychus propetes Pritchard & ..., 1955 | Saber crab |
| Oligonychus proteae Meyer & Ryke, 1959 | Mangrove root crab |
| Oligonychus pruni Mitrofanov &..., 1973 | |
| Oligonychus psidii Flechtmann, 1967 | Flotsam crab |
| Oligonychus pustulosus Ehara, 1962 | Mangrove tree crab |
| Oligonychus quercus Tuttle, Bake..., 1976 | |
| Oligonychus randriamasii Gutiérrez, 1967 | Humic marsh crab |
| Oligonychus rubicundus Ehara, 1971 | |
| Oligonychus rusticus Meyer, 1974 | |
| Oligonychus saccharinus Baker & Prit..., 1960 | |
| Oligonychus saccharoides Baker & Tuttle, 1972 | |
| Oligonychus simus Baker & Prit..., 1960 | |
| Oligonychus smithi Cromroy, 1958 | |
| Oligonychus steinhaueri Flechtmann &..., 1970 | |
| Oligonychus stenoperitrematus Ugarov & Nik..., 1937 | |
| Oligonychus stickneyi McGregor, 1919 | Yellowish spider mite |
| Oligonychus sumatranus Ehara, 2044 | |
| Oligonychus sylvestris Gutiérrez, 1967 | |
| Oligonychus terminalis Sayed, 1946 | |
| Oligonychus thelytokus Gutiérrez, 1977 | |
| Oligonychus themedae Meyer, 1974 | |
| Oligonychus tlaxcensis Tuttle, Bake..., 1976 | Japanese deepwater carrier crab |
| Oligonychus trachycarpus (Lo, 1969) | ⇒ Oligonychus modestus Banks, 1900 |
| Oligonychus triandrae Meyer, 1974 | |
| Oligonychus trichardti Meyer, 1974 | Daddy-longlegs crab |
| Oligonychus tshimkenticus Wainstein, 1956 | |
| Oligonychus tsudomei Ehara, 1966 | Granulose purse crab |
| Oligonychus tuberculatus Estebanes & ..., 1968 | Spurfinger purse crab |
| Oligonychus tylus Baker & Prit..., 1960 | Thinarm clutch crab |
| Oligonychus ulmi (Koch, 1836) | ⇒ Panonychus ulmi Koch, 1836 |
| Oligonychus vazquezae Estebanes & ..., 1968 | Longfinger purse crab |
| Oligonychus velascoi Rimando, 1962 | |
| Oligonychus veranerae Baker & Prit..., 1962 | Carinate clutch crab |
| Oligonychus verduzcoi Estebanes & ..., 1968 | |
| Oligonychus virens Gutiérrez, 1969 | Fivespine purse crab |
| Oligonychus viridis (Banks sensu ..., 1958) | ⇒ Oligonychus punicae Hirst, 1926 ..., 1994 |
| Oligonychus yasumatsui Ehara & Wong..., 1975 | |
| Oligonychus yothersi McGregor, 1914 | Avocado red mite |
| Oligonychus yusti McGregor, 1959 | Mottled purse crab |
