|Scientific Name:||Cochlostoma bicostulatum Gofas, 1989|
|Taxonomic Notes:||Latest revision was made by Gofas (2001).|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Neubert, E. & Ward, J.|
This species lives within a relatively wide range and there are several known sub-populations. There is no reason to suppose that the area of occupancy, extent of occurrence, number of locations, number of sub-populations or the number of mature individuals are declining or extremely fluctuating. Therefore, it is assessed as Least Concern (LC).
|Range Description:||This species is distributed in northern Spain (in the Basque county, Cantabria and Asturia). Within its range, this species is not rare: at least 80 locations are published by Gofas (2001). Therefore, there is no reason to suppose that the area of occupancy (300 km2), extent of occurrence (8,500 km2) or the number of locations are declining or extremely fluctuating.|
Native:Spain (Spain (mainland))
|Range Map:||Click here to open the map viewer and explore range.|
Within its relatively large range, this species does not seem to be rare. Therefore there is no reason to suppose that the number of sub-populations or the number of mature individuals are declining or extremely fluctuating.
|Current Population Trend:||Stable|
|Habitat and Ecology:||According to Gofas (2001), this species prefers rocky habitats in limestone areas where it is usually found among mounds of loose large stones in shaded places at the base of rocks. This species is usually not found on bare, exposed rock surfaces. It is sometimes found in the same areas as Cochlostoma hidalgoi, but they are separated by the habitat type (C. hidalgoi prefers the rock surface).|
|Continuing decline in area, extent and/or quality of habitat:||No|
Due to its habitat preference, this species does not seem to be very sensitive to ecosystem modification or other realistic threats. Considering that this species inhabits inaccessible locations, drastic and wide-scale ecosystem modification is only a hypothetical threat and local events do not affect the whole population significantly.
This species is not protected in Spain, although at least a part of its populations live within protected areas in the Picos de Europa National Park and Parque Natural de Fuentes Carrionas y Fuente Cobre-Montaña Palentina. No conservation actions are currently required.
Gofas, S. 2001. The systematics of Pyrenean and Cantabrian Cochlostoma (Gastropoda, Cyclophoroidea) revisited. Journal of Natural History 35(9): 1277-1369.
IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: http://www.iucnredlist.org. (Accessed: 30 June 2017).
|Citation:||Fehér, Z. 2011. Cochlostoma bicostulatum. The IUCN Red List of Threatened Species 2011: e.T170539A6785119.Downloaded on 15 December 2017.|