Tyrrheniberus sardonius 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Helicidae

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.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2013
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)
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.
Systems: Terrestrial
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.

Classifications [top]

3. Shrubland -> 3.8. Shrubland - Mediterranean-type Shrubby Vegetation
suitability: Suitable  major importance:Yes
0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
suitability: Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
6. Human intrusions & disturbance -> 6.1. Recreational activities
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

11. Climate change & severe weather -> 11.4. Storms & flooding
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

Bibliography [top]

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: (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 01 December 2015.
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