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''Arion'' is a genus of air-breathing land slugs in the family Arionidae, the roundback slugs. Most species of this Palearctic genus are native to the Iberian Peninsula.〔Quinteiro, J., et al. (2005). (Phylogeny of slug species of the genus ''Arion'': evidence of monophyly of Iberian endemics and of the existence of relict species in Pyrenean refuges. ) ''Journal of Zoological Systematics and Evolutionary Research'' 43(2), 139-48.〕 Species can be difficult to distinguish from one another upon cursory examination, because individuals of a species can vary in color and there are few obvious differences between taxa.〔Skujienė, G. and M. Soroka. (2003). (A comparison of different DNA extraction methods for slugs (Mollusca: Pulmonata). ) ''Ekologija'' 1, 12-16.〕 The color of an individual can be influenced by its diet.〔Jordaens, K., et al. (2001). (Food-induced body pigmentation questions the taxonomic value of colour in the self-fertilizing slug ''Carinarion'' spp. ) ''Journal of Molluscan Studies'' 67(2), 161-67.〕 Some ''Arion'' are known as pests, such as ''A. lusitanicus'' auct. non Mabille (= ''A. vulgaris''), which damages agricultural crops and ornamental plants, and ''A. rufus'', a familiar garden pest.〔Soroka, M., et al. (2008). (Distribution and genetic diversity of the terrestrial slugs ''Arion lusitanicus'' Mabille, 1868 and ''Arion rufus'' (Linnaeus, 1758) in Poland based on mitochondrial DNA. ) ''Folia Biologica'' 57(1-2), 1-2.〕 ''Arion'' slugs are often transported internationally in shipments of plant products and mushrooms.〔Barr, N. B., et al. (2009). (Application of a DNA barcode using the 16S rRNA gene to diagnose pest ''Arion'' species in the USA. ) ''Journal of Molluscan Studies'' 75(2), 187-91.〕 ==Species== There are approximately 40 species in the genus.〔 Species include: * ''Arion ater'' – black slug * ''Arion circumscriptus'' – brownbanded arion * ''Arion distinctus'' Mabille, 1868 * ''Arion fasciatus'' * ''Arion flagellus'' * ''Arion fuscus'' * ''Arion hortensis'' Férussac, 1819 – small striped slug * ''Arion intermedius'' Normand, 1852 (syn. ''Arion alpinus'' Pollonera, 1887〔Manganelli, G., et al. (2010). (The status of ''Arion alpinus'' Pollonera 1887, and re-description of ''Arion obesoductus'' Reischütz 1973 (Gastropoda, Arionidae). ) ''Journal of Conchology'' 40, 269-76.〕) – hedgehog slug * ''Arion lusitanicus'' * ''Arion obesoductus'' (syn. ''Arion alpinus'' auctt. non Pollonera, 1887〔) * ''Arion occultus'' * ''Arion owenii'' * ''Arion rufus'' – red slug * ''Arion silvaticus'' * ''Arion simrothi'' * ''Arion subfuscus'' * ''Arion transsylvanus'' Simroth, 1885〔Jordaens, K., et al. (2010). (''Arion transsylvanus'' (Mollusca, Pulmonata, Arionidae): rediscovery of a cryptic species. ) ''Zoologica Scripta'' 39(4), 343-62. .〕 * ''Arion vulgaris'' (syn. ''Arion lusitanicus'' auct. non Mabille) – Spanish slug 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arion (gastropod)」の詳細全文を読む スポンサード リンク
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