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 Cochlicopoidea Pilsbry, 1900 (1879)
             Family Amastridae Pilsbry, 1910
               Genus Kauaia Sykes, 1900
                 Subgenus Armiella Hyatt, 1911