Hydrachnidia Krantz, 1978 - water mites Superfamily Arrenuroidea Thor, 1900 Family Momoniidae Viets, 1926 Subfamily Stygomomoniinae Motaş & Tanasachi, 1946 Genus Stygomomonia Szalay, 1943 1 Subgenus Stygomomonia (Stygomomonia) Szalay, 1943 2 Subgenus Stygomomonia (Allomomonia) Cook, 1968