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 Achatinelloidea Gulick, 1873 [monotypic]
             Family Achatinellidae Gulick, 1873
               Subfamily Pitysinae Cooke & Kondo, 1961 see Tribe Elasmatinini Iredale, 1937
                 01 Genus Pitys Mörch, 1852
                 02 Genus Antonella Cooke & Kondo, 1960
                 03 Genus Apopitys Cooke & Kondo, 1960
                 04 Genus Celticola Cooke & Kondo, 1960
                 05 Genus Lamellovum Pilsbry, 1910
                 06 Genus Mangaoa Cooke & Kondo, 1960
                 07 Genus Mitiperua Cooke & Kondo, 1960
                 08 Genus Perahua Cooke & Kondo, 1960
                 09 Genus Pukinia Vaught, 1989, orth. inval. see Genus Pukunia Cooke & Kondo, 1960
                 10 Genus Strobilus Anton, 1838
                 11 Genus Taitaa Cooke & Kondo, 1960
                 12 Genus Tubuaia Cooke & Kondo, 1960