Hydrachnidia Krantz, 1978 - water mites
Superfamily Arrenuroidea Thor, 1900
Family Arrenuridae Thor, 1900
Genus Arrenurus Dugès, 1834
01 Subgenus Arrenurus (Arrenurus) Dugès, 1834
02 Subgenus Arrenurus (Arrhenuropsides) Viets, 1954
03 Subgenus Arrenurus (Arrhenuropsis) Viets, 1954
04 Subgenus Arrenurus (Brevicaudaturus) Smit, 1997
05 Subgenus Arrenurus (Dadayella) Koenike, 1907
06 Subgenus Arrenurus (Dividuracarus) Smit, 1997
07 Subgenus Arrenurus (Megaluracarus) Viets, 1911
08 Subgenus Arrenurus (Micruracarus) Viets, 1911
09 Subgenus Arrenurus (Rhinophoracarus) Viets, 1917
10 Subgenus Arrenurus (Rhomborificias) Jin & Li, 1993
11 Subgenus Arrenurus (Truncaturus) Thor, 1901