Hydrachnidia Krantz, 1978 - water mites Superfamily Arrenuroidea Thor, 1900 Family Hungarohydracaridae Motaş & Tanasachi, 1959 Subfamily Balcanohydracarinae Cook, 1967 [monotypic] 1 Genus Balcanohydracarus Motas & Tanasachi, 1948