Hydrachnidia Krantz, 1978 - water mites
   Superfamily Hygrobatoidea Koch, 1842
     Family Feltriidae Viets, 1926 [monotypic]
       Genus Feltria Koenike, 1892
         1 Subgenus Feltria (Feltria) Koenike, 1892
         2 Subgenus Feltria (Azugofeltria) Motas & Tanasachi, 1948
         3 Subgenus Feltria (Feltriella) Viets, 1930
         4 Subgenus Feltria (Neofeltria) Cook, 1963