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 Hygromiidae Tryon, 1866
               Subfamily Trichiinae Ložek, 1956, nom. illeg. see Tribe Trochulini Lindholm, 1927
                 01 Genus Trichia Hartmann, 1840, nom. illeg.
                 02 Genus Anoplitella Lindholm, 1929
                 03 Genus Caucasigena Lindholm, 1927
                 04 Genus Hygrohelicopsis Schileyko, 1978
                 05 Genus Kokotschashvilia Hudec & Lezhawa, 1969
                 06 Genus Leucozonella Lindholm, 1927
                 07 Genus Odontotrema Lindholm, 1927
                 08 Genus Plicuteria Schileyko, 1978
                 09 Genus Ponentina Hesse, 1921
                 10 Genus Teberdinia Schileyko, 1978
                 11 Genus Xerocampylea orth. inval. see Genus Xerocampylaea Kobelt, 1871
                 12 Genus Halolimnohelix Germain, 1913