Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Superorder Archaeogastropoda Thiele, 1925
         Order Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.
           Superfamily Trochoidea Rafinesque, 1815
             Family Trochidae Rafinesque, 1815 - top snails
               Subfamily Trochinae Rafinesque, 1815
                 Tribe Gibulini Millard, 1997, orth. inval. see Tribe Gibbulini Stoliczka, 1868
                   Genus Diloma Philippi, 1845
                     1 Subgenus Cavodiloma Finlay, 1926
                     2 Subgenus Fractarmilla Finlay, 1927
                     3 Subgenus Chlorodiloma Pilsbry, 1889
                     4 Subgenus Oxystele Philippi, 1847
                     5 Subgenus Pictodiloma Habe, 1946