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''Pseudofusulus varians'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae. Genus ''Pseudofusulus'' is monotypic genus (contains one species only) with ''Pseudofusulus varians'' as its type species. It is a relict species from Atlantic period of the Holocene, inhabiting exclusively nature beech and scree forests in Europe.〔 == Distribution == The distribution of this species is Eastern-Alpine and Western-Carpathian.〔 The type locality is High Alps in Styria, Austria.〔 The key area of its range are Western Alps (from the south-western part of Alps to Croatia, and also to Dolomites in the southern Tyrol).〔 * Austria〔 * Germany〔 * Czech Republic - 7 confirmed sites in Ore Mountains in Bohemia,〔 locally extinct in Moravia.〔 Already Vojen Ložek has been calling for the effective conservation of this species in 1980s.〔〔 Ložek V. (1985). "Z červené knihy našich měkkýšů - je ohrožen vřetenec horský?". ''Živa'' 33: 221.〕 It is one of the most endangered species in the Czech Republic, restricted to hidden and undisturbed natural deciduous forests.〔 Originally it was known from 16 sites in the Ore Mountains (Krušné Hory Mts.), in the northwestern Bohemia, Czech Republic and one site on the slope of Smrk Mount in the Moravian-Silesian Beskids (Moravskoslezské Beskydy Mts.), East Moravia, Czech Republic.〔 * * extinct in Moravia: The forest at the only (but well populated) locality in the Moravia has been seriously damaged by air pollution from factories (such as Třinec Iron and Steel Works and others) jointly with the 20°C dropping of temperatures in inversion on 31 December 1978.〔 The nearly all pollution-damaged stand died out at the southwestern slope on the Smrk Mount.〔 * * in Bohemia: The occurrence of the snail was recently confirmed only at seven sites in the Krušné Hory Mts.〔 Remaining sites were destroyed due to human impacts, mainly acid rains and insensitive forest management〔 mainly due to removal of dead wood and clearcutting.〔 Therefore its populations survived only in forest patches hidden in hardly accessible places.〔 * Slovakia - in the eastern part of Low Tatras, in the peak level of Poľana, Klenovský Vepor Mount in the Vepor Mountains, Muránska planina and the Ondrejsko in Slovak Paradise is the easternmost.〔 All of these records in the Slovakia are coming from 1960s-1970s and there has been no verification since.〔 * Croatia〔 * and others 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「Pseudofusulus varians」の詳細全文を読む スポンサード リンク
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