Hydrachnidia Krantz, 1978 - water mites
   Superfamily Hygrobatoidea Koch, 1842
     Family Unionicolidae Oudemans, 1909
       Subfamily Encentridophorinae Viets, 1935 [monotypic]
         Genus Encentridophorus Piersig, 1897
           Subgenus Encentridophorus (Encentridophorellus) Lundblad, 1951