alpinus, Arion alpinus Pollonera, 1887 - syn of: Arion intermedius Normand, 1852
ambiguus, Carinarion ambiguus Pollonera, 1889 - syn of: Carinarion circumscriptus (Johnston, 1828)
anguiformis, Geomalacus anguiformis Morelet, 1845
anguloi, Mesarion anguloi Martín & Gómez, 1988 - syn of: Arion urbiae Winter, 1986
anthracius, Kobeltia anthracius Bourguignat, 1886
apennina, Kobeltia apennina Pollonera, 1889 - syn of: Arion intermedius Normand, 1852
ater, Arion ater (Linnaeus, 1758)
ater rufus, Arion ater rufus (Linnaeus, 1758)
atripunctatus, Arion atripunctatus Dumont & Mortillet, 1857
aureus, Arion aureus Lessona, 1880 - syn of: Arion intermedius Normand, 1852
baeticus, Mesarion baeticus Garrido, Castillejo & Iglesias, 1994
bocagei, Arion bocagei Simroth, 1888 - syn of: Arion ater rufus (Linnaeus, 1758)
bourguignati, Carinarion bourguignati Mabille, 1868 - syn of: Carinarion circumscriptus (Johnston, 1828)
brunneus, Arion brunneus Lehmann, 1862 - syn of: Mesarion subfuscus (Draparnaud, 1805)
cendreroi, Arion cendreroi Torres Mínguez, 1925 - syn of: Arion ater rufus (Linnaeus, 1758)
circumscriptus, Carinarion circumscriptus (Johnston, 1828)
collominiato, Arion collominiato Torres Mínguez, 1925 - syn of: Arion lusitanicus Mabille, 1868
cottianus, Kobeltia cottianus Pollonera, 1889 - syn of: Arion distinctus (Mabille, 1868)
distinctus, Arion distinctus (Mabille, 1868)
distinctus, Kobeltia distinctus Mabille, 1868 - syn of: Arion distinctus (Mabille, 1868)
empiricorum, Arion empiricorum Férussac, 1819 - syn of: Arion ater rufus (Linnaeus, 1758)
esthonicus, Arion esthonicus Poska-Teiss, 1927 - syn of: Mesarion subfuscus (Draparnaud, 1805)
euthymeanus, Arion euthymeanus Florence, 1888
fagophilus, Arion fagophilus Winter, 1986
fasciatus, Carinarion fasciatus (Nilsson, 1823)
flagellus, Arion flagellus Collinge, 1893
franciscoloi, Arion franciscoloi Boato, Bodon & Giusti, 1983
fuligineus, Arion fuligineus Morelet, 1845
fulvipes, Arion fulvipes Torres Mínguez, 1925 - syn of: Arion lusitanicus Mabille, 1868
fuscicornis, Granulilimax fuscicornis Minato, 1989
fuscus, Kobeltia fuscus (Müller, 1774)
gilvus, Arion gilvus Torres Mínguez, 1925
grandis, Geomalacus grandis Simroth, 1893 - syn of: Geomalacus maculosus Allman, 1843
gwaii, Staala gwaii Ovaska, Chichester & Sopuck, 2010
hermani, Securicauda hermani Leonard, Chichester, Richart & Young, 2011
hessei, Arion hessei Simroth, 1893 - syn of: Arion intermedius Normand, 1852
hispanicus, Mesarion hispanicus (Simroth, 1886)
hortensis, Kobeltia hortensis (Férussac, 1819)
hortensis, Kobeltia hortensis Auct. non Férussac, 0 - syn of: Arion distinctus (Mabille, 1868)
intermedius, Arion intermedius Normand, 1852
iratii, Mesarion iratii Garrido, Castillejo & Iglesias, 1995
isseli, Arion isseli (Lessona & Pollonera, 1882)
krynickii, Arion krynickii Kaleniczenko, 1851 - syn of: Mesarion subfuscus (Draparnaud, 1805)
limbata, Arion limbata Lowe, 1855 - syn of: Arion lusitanicus Mabille, 1868
lineispede, Arion lineispede Torres Mínguez, 1927
lizarrustii, Mesarion lizarrustii Garrido, Castillejo & Iglesias, 1995
luisae, Kobeltia luisae Borrèda & Martínez-Ortí, 2014
lusitanica, Geomalacus lusitanica Da Silva e Castro, 1873 - syn of: Geomalacus maculosus Allman, 1843
lusitanicus, Arion lusitanicus Auct. non Mabille, 1868 - syn of: Arion vulgaris (Moquin-Tandon, 1855)
lusitanicus, Arion lusitanicus Mabille, 1868
maculosus, Geomalacus maculosus Allman, 1843
magnus, Arion magnus Torres Mínguez, 1923
malagensis, Arrudia malagensis Wiktor & Norris, 1991
minimus, Arion minimus Simroth, 1885 - syn of: Arion intermedius Normand, 1852
miser, Carinarion miser Pollonera, 1887 - syn of: Carinarion circumscriptus (Johnston, 1828)
molinae, Mesarion molinae Garrido, Castillejo & Iglesias, 1995
molleri, Arion molleri Pollonera, 1889 - syn of: Arion intermedius Normand, 1852
monticola, Nipponolimax monticola Yamaguchi & Habe, 1955
moreleti, Letourneuxia moreleti (Hesse, 1884)
mortilleti, Ariunculus mortilleti Lessona, 1881
nigrachlamydae, Arion nigrachlamydae Torres Mínguez, 1925 - syn of: Arion lusitanicus Mabille, 1868
nilssoni, Arion nilssoni Pollonera, 1887 - syn of: Carinarion fasciatus (Nilsson, 1823)
nobrei, Arion nobrei Pollonera, 1889
numidica, Letourneuxia numidica (Bourguignat, 1866)
nuriae, Arion nuriae Torres Mínguez, 1925 - syn of: Arion lusitanicus Mabille, 1868
obesoductus, Kobeltia obesoductus Reischütz, 1973
occultus, Arion occultus Anderson, 2004
oliveirae, Geomalacus oliveirae Simroth, 1891
owenii, Arion owenii Davies, 1979
pascalianus, Arion pascalianus Mabille, 1868
paularensis, Arion paularensis Wiktor & Parejo, 1989
ponsi, Mesarion ponsi Quintana, 2007
pyrenaicus, Kobeltia pyrenaicus Fagot, 1881 - syn of: Kobeltia hortensis (Férussac, 1819)
rhaeticus, Arion rhaeticus Simroth, 1910 - syn of: Arion intermedius Normand, 1852
rufus, Arion ater rufus Linnaeus
rufus, Arion rufus Linnaeus, 1758 - syn of: Arion ater rufus (Linnaeus, 1758)
rufus vulgaris, Arion rufus vulgaris Moquin-Tandon, 1855 - syn of: Arion vulgaris (Moquin-Tandon, 1855)
ruginosus, Arion ruginosus Torres Mínguez, 1924 - syn of: Arion lusitanicus Mabille, 1868
sibiricus, Mesarion sibiricus (Simroth, 1901)
silvaticus, Arion silvaticus Lohmander, 1937 - syn of: Carinarion circumscriptus (Johnston, 1828)
simrothi, Mesarion simrothi (Künkel, 1909)
speziae, Arion speziae Lessona, 1881
squammantinus, Arrudia squammantinus Morelet, 1854 - syn of: Geomalacus anguiformis Morelet, 1845
stormi, Carinacauda stormi Leonard, Chichester, Richart & Young, 2011
subcarinatus, Carinarion subcarinatus Pollonera, 1885 - syn of: Carinarion circumscriptus (Johnston, 1828)
subfuscus, Mesarion subfuscus (Draparnaud, 1805)
timidus, Arion timidus Simroth, 1891
transsylvanus, Mesarion transsylvanus (Simroth, 1885)
urbiae, Arion urbiae Winter, 1986
vejdorskyi, Arion vejdorskyi Babor & Koštal, 1893
vejdovskyi, Arion vejdovskyi Babor & Koštal, 1893 - syn of: Arion vejdorskyi Babor & Koštal, 1893
vejdowskyi, Arion vejdowskyi Babor & Koštal, 1893 - syn of: Arion vejdorskyi Babor & Koštal, 1893
viridis, Arrudia viridis Morelet, 1845 - syn of: Geomalacus anguiformis Morelet, 1845
vulgaris, Arion vulgaris (Moquin-Tandon, 1855)
wiktori, Kobeltia wiktori Parejo & Maratin, 1990
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