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''Xerolenta obvia'' is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Hygromiidae, the hairy snails and their allies. ==Distribution == This land snail occurs in European countries including: * Bulgaria * Romania * Czech Republic * Poland * Slovakia * Ukraine〔Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. ''Journal of Conchology''. 41 (1): 91-109.〕 *Canada (Bethany, Ontario, Canada first detected in 1969 and 1972;〔Grimm, F. W. & Wiggins, G.B. (()). Colonies of the European snail ''Helicella obvia'' (Hartmann) in Ontario. ''The Canadian Field-Naturalist'' 88 (4): 421–428.〕 at least 23 occurrences in southern Ontario as of 2015〔Forsyth, R.G., M.J. Oldham, E. Snyder, F.W. Schueler & R. Layberry (2015). Forty years later: distribution of the introduced Heath Snail, Xerolenta obvia, in Ontario, Canada (Mollusca: Gastropoda: Hygromiidae). ''Check List'' 11(4): 1711. doi: (10.15560/11.4.1711 )〕) *Wayne County, Michigan United States of America Detected in 2002 (B. Sullivan) * and others This species is already established in the USA, and is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce. Therefore it has been suggested that this species be given top national quarantine significance in the USA.〔Cowie R. H., Dillon R. T., Robinson D. G. & Smith J. W. (2009). Alien non-marine snails and slugs of priority quarantine importance in the United States: A preliminary risk assessment. ''American Malacological Bulletin'' 27: 113-132. (PDF ).〕 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「Xerolenta obvia」の詳細全文を読む スポンサード リンク
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