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
         (Helicid Sigmurethra)
           Superfamily Helicoidea Rafinesque, 1815
             Family Bradybaenidae Pilsbry, 1934 (1898)
               Subfamily Bradybaeninae Pilsbry, 1934 (1898)
                 Genus Aegista Albers, 1850
                   1 Subgenus Coelorus Pilsbry, 1900
                   2 Subgenus Plectotropis Martens, 1860