Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         Suborder Mesurethra [monotypic]
           Superfamily Clausilioidea Gray, 1855 [monotypic]
             Family Clausiliidae Gray, 1855
               Subfamily Megalophaedusinae see Tribe Megalophaedusini Zilch, 1954
                 Genus Luchuphaedusa Pilsbry, 1901
                   1 Subgenus Oophaedusa Pilsbry, 1905