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 Orthurethra Pilsbry, 1900
           Superfamily Pupilloidea Turton, 1831
             Family Pupillidae Turton, 1831
               Subfamily Pupillinae Turton, 1831 see Family Pupillidae Turton, 1831
                 Genus Pupoides Pfeiffer, 1854
                   Subgenus Ischnopupoides Pilsbry, 1926