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 Arionoidea Gray, 1840
             Family Arionidae Gray, 1840
               Subfamily Ariolimacinae Pilsbry & Vanatta, 1898
                 1 Genus Ariolimax Mörch, 1859
                 2 Genus Hesperarion Simroth, 1891
                 3 Genus Magnipelta Pilsbry, 1953
                 4 Genus Udosarx Webb, 1959
                 5 Genus Zacoleus Pilsbry, 1903