Tyrrheniberus sardonius 

Scope: Global & Europe
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Helicidae

Scientific Name: Tyrrheniberus sardonius (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.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2011
Date Assessed: 2011-03-18
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).

Geographic Range [top]

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).
Countries occurrence:
Italy (Sardegna)
Additional data:
Estimated area of occupancy (AOO) - km2:4
Number of Locations:1
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information available on the population size or trend of this species.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

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 [top]

Use and Trade: This species is not used.

Threats [top]

Major Threat(s): The major threat to this species are recreational activities like rock climbing and probably flood events.

Conservation Actions [top]

Conservation Actions: There is no conservation action in place for this species.

Citation: Falkner, M., Falkner, G. & von Proschwitz, T. 2011. Tyrrheniberus sardonius. The IUCN Red List of Threatened Species 2011: e.T156999A5027620. . Downloaded on 25 September 2018.
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