Hydrachnidia Krantz, 1978 - water mites Superfamily Lebertioidea Thor, 1900 Family Sperchontidae Thor, 1900 Subfamily Sperchontinae Thor, 1900 Genus Sperchonopsis Piersig, 1896 1 Subgenus Sperchonopsis (Sperchonopsis) Piersig, 1896 2 Subgenus Sperchonopsis (Sperchonopsella) Conroy, 1991