Hydrachnidia Krantz, 1978 - water mites Superfamily Hygrobatoidea Koch, 1842 Family Frontipodopsidae Viets, 1931 [monotypic] Genus Frontipodopsis Walter, 1919 1 Subgenus Frontipodopsis (Frontipodopsis) Walter, 1919 2 Subgenus Frontipodopsis (Frontipodopsella) Walter, 1947