|Scientific Name:||Tyrrheniberus sardonius|
|Species Authority:||(E. von Martens, 1884)|
|Taxonomic Notes:||Fauna Europaea lists this taxon as a separate species. According to Fiorentino et al. (2010), it is a junger synonym of T. villicus. Earlier K. L. Pfeiffer (1946) proposed that T. sardonius should be treated as a subspecies of T. villicus. According to the assessors of this species, this view should be retained. However, as the taxon is listed as a species in its own rights in Fauna Europea, it is here assessed as such.|
|Red List Category & Criteria:||Critically Endangered B1ab(iii)+2ab(iii) ver 3.1|
|Assessor(s):||Falkner, M., Falkner, G. & von Proschwitz, T.|
|Reviewer(s):||Cuttelod, A. & Bilz, M.|
The (sub)species is endemic to an extremely restricted area in the eastern coastal mountains of Sardinia, i.e. a 2 km stretch of the canyon of the torrent Fuili (south east of Dorgali) where it occurs occasionally sympatric with T. ridens. It is threatenad by human activities. If considered as a subspecies of T. villicus (as recommended) it should be noted that there is a large disjunction to the area of the nominal subspecies. Following the view of Fauna Europaea, which recognises it as a species in its own rights, it is here assessed as Critically Endangered (EN) B1ab(iii)+2ab(iii).
|Range Description:||This species is endemic to Sardinia (Italy). It live in an extremely restricted area in the eastern coastal mountains of Sardinia, i.e. a 2 km stretch of the canyon of the torrent Fuili (south east of Dorgali).|
|Estimated area of occupancy (AOO) - km2:||4|
|Number of Locations:||1|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||There is no information available on the population size or trend of this species.|
|Current Population Trend:||Unknown|
|Habitat and Ecology:||This species is a typical rock-dweller on limestone rocks in Mediterranean vegetation types.|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Use and Trade:||This species is not used.|
|Major Threat(s):||The major threat to this species are recreational activities like rock climbing and probably flood events.|
|Conservation Actions:||There is no conservation action in place for this species.|
Fiorentino, V., Salomone, N., Manganelli, G. and Giusti. 2010. Historical biogeography of Tyrrhenian land snails: The Marmorana–Tyrrheniberus radiation (Pulmonata, Helicidae). Molecular Phylogenetics and Evolution 55(1): 26-37.
IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: http://www.iucnredlist.org. (Accessed: 16 June 2011).
Pfeiffer, K. L. 1946. Die Murellen Sardiniens. Abh. senck. naturf. Ges. 472: 35 pp.
|Citation:||Falkner, M., Falkner, G. & von Proschwitz, T. 2013. Tyrrheniberus sardonius. The IUCN Red List of Threatened Species 2013: e.T156999A5027620. . Downloaded on 03 May 2016.|