Geomalacus anguiformis P.M.A. Morelet, 1845
Kobeltia anthracius J.R. Bourguignat, 1886
Arion ater (C. Linnaeus, 1758)
Arion ater rufus (C. Linnaeus, 1758)
Arion atripunctatus F. Dumont& L.L.G. de Mortillet, 1857
Mesarion baeticus C. Garrido, J. Castillejo& J. Iglesias, 1994
Carinarion circumscriptus (G. Johnston, 1828)
Arion distinctus (J.F. Mabille, 1868)
Arion euthymeanus Florence, 1888
Arion fagophilus A.J. de Winter, 1986
Carinarion fasciatus (S. Nilsson, 1823)
Arion flagellus W.E. Collinge, 1893
Arion franciscoloi A. Boato, M. Bodon& F.L. Giusti, 1983
Arion fuligineus P.M.A. Morelet, 1845
Granulilimax fuscicornis H. Minato, 1989
Kobeltia fuscus (O.F. Müller, 1774)
Arion gilvus A. Torres Mínguez, 1925
Staala gwaii Ovaska, L.F. Chichester& Sopuck, 2010
Securicauda hermani A.B. Leonard, L.F. Chichester, M.D. Richart& A.T. Young, 2011
Mesarion hispanicus (H.R. Simroth, 1886)
Kobeltia hortensis (A.E.J. Férussac, 1819)
Arion intermedius N.A.J. Normand, 1852
Mesarion iratii C. Garrido, J. Castillejo& J. Iglesias, 1995
Arion isseli (M. Lessona & C. Pollonera,1882)
Arion lineispede A. Torres Mínguez, 1927
Mesarion lizarrustii C. Garrido, J. Castillejo& J. Iglesias, 1995
Kobeltia luisae Borrèda & Martínez-Ortí,2014
Arion lusitanicus J.F. Mabille, 1868
Geomalacus maculosus G.J. Allman, 1843
Arion magnus A. Torres Mínguez, 1923
Arrudia malagensis A. Wiktor & A. Norris,1991
Mesarion molinae C. Garrido, J. Castillejo& J. Iglesias, 1995
Nipponolimax monticola S. Yamaguchi & T. Habe,1955
Letourneuxia moreleti (P. Hesse, 1884)
Ariunculus mortilleti M. Lessona, 1881