Hydrachnidia Krantz, 1978 - water mites Superfamily Eylaoidea Leach, 1815 Family Limnocharidae Grube, 1859 1 Subfamily Limnocharinae Grube, 1859 2 Subfamily Neolimnocharinae Gerecke, Wohltmann, Smith & Judson, 2020 3 Subfamily Rhyncholimnocharinae Lundblad, 1936