Tacheocampylaea romagnolii 

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Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Helicidae

Scientific Name: Tacheocampylaea romagnolii (Dutailly, 1867)
Taxonomic Notes: This is a polytypic species with two subspecies: T. romagnolii romagnolii (Dutailly, 1867), and T. r. deschampsiana (Hagenmüller, 1888).
T. romagnolii romagnolii: Hélice de Corte
T. romagnolii deschampsiana: Hélice de la Tartagine [note: the subspecies does not occur in the Tartagine valley as could be presumed from the common name].

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii,v)+2ab(iii,v) ver 3.1
Year Published: 2011
Date Assessed: 2011-03-08
Assessor(s): Falkner, G., Falkner, M. & von Proschwitz, T.
Reviewer(s): Cuttelod, A. & Ward, J.
This species is known only from one location (= 4 km2 in IUCN standards), however, the inferred actual area of occupancy (AOO) for this species 0.6 km2.The species (with two subspecies) is endemic to a very restricted area in the west and north of Corte. The nominal subspecies is probably extinct. Of the five localities where the subspecies T. r. deschampsiana was known, only one surviving subpopulation is left and is facing pressure from human activities. This dramatic decline leads to the assessment as Critically Endangered (CR) B1ab(iii,v)+2ab(iii,v).

Geographic Range [top]

Range Description:This species is endemic to Corsica. The information on the distribution of the nominotypical subspecies T. r. romagnolii is confusing: The type locality is originally indicated as "... aux environs de Corte" (Dutailly 1867). Hagenmüller (1888) did search the species thoroughly, but unsuccessfully,  in the surroundings of Corte. However an occurrence in the Tavignano valley near Corte is indicated by Scharff (1894). A former occurrence in the Orta valley, as indicated by Germain (1931), seems possible. The largest part of the existing museum material was collected and distributed by the entomologist Revelière. As Revelière kept his collection site secret, his residence Bonifacio is often erroneously indicated as the locality.
Collection samples indicate that the subspecies T. r. deschampsiana had a larger distribution in the Tavignano valley and its sourroundings west of Corte; in 2004 the T. r. deschampsiana was only found living in the Forêt de Melo.

This species is known only from one location in an area of 0.6 km2.
Countries occurrence:
France (Corsica)
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, the nominotypical subspecies Tacheocampylaea romagnolii romagnolii is probably gone extinct already.
Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Yes
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits rocky habitats in primary Mediterranean woodlands.
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): Potential threats to this species are destruction of the habitats by urbanisation, tourism and recreational development, road construction, deforestation, and fire, particularly in the valleys of Tavignano and Orta; a major threat is predation by pigs living in the wild.

Conservation Actions [top]

Conservation Actions: Possibly the species is legally protected under the former taxonomic perception of all Corsican Tacheocampylaea as a single species, which has been inscribed in the national list of protected species under the name Tacheocampylaea raspailii (see that species)

Citation: Falkner, G., Falkner, M. & von Proschwitz, T. 2011. Tacheocampylaea romagnolii. The IUCN Red List of Threatened Species 2011: e.T157006A5029613. . Downloaded on 22 January 2018.
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