Xerocrassa montserratensis
| Kingdom |
Phylum |
Class |
Order |
Family |
| ANIMALIA |
MOLLUSCA |
GASTROPODA |
STYLOMMATOPHORA |
HYGROMIIDAE |
| Scientific Name: |
Xerocrassa montserratensis |
| Species Authority: |
Hidalgo, 1870 |
| Infra-specific Taxa Assessed: |
|
| Synonym/s: |
Helix montserratensis Hidalgo, 1870 subspecies delicatula Bofill, 1898
Trochoidea montserratensis (Hidalgo, 1870) subspecies betulonensis Bofill, 1879
|
| Taxonomic Notes: |
Puente (1994) considers X. montserratensis and X. betulonensis two different species. Martínez-Ortí and Bros are working to clarify the taxonomic status. |
Assessment Information
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| Red List Category & Criteria: |
Endangered
B1ab(iii)+2ab(iii)
ver 3.1
|
| Year Published: |
2011 |
| Assessor/s: |
Martínez-Ortí, A. |
| Reviewer/s: |
Arrébola, J., Seddon, M., Lutz, M.L., Nichols, C., Cuttelod, A. & Neubert, E. |
| Contributor/s: |
|
Justification:
This species is endemic to the Montserrat mountainous chain in Catalonia, Spain. It has an extent of occurrence of 3,600 km2, an area of occupancy of 448 km2 and is found in 5 - 10 locations. It is close to urban areas, one subpopulation has been lost and there are threats to the others, even though some of the sub-populations occur in protected areas. It is listed as Endangered (EN) B1ab(iii)+2ab(iii). Taxonomic research is required.
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Geographic Range
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| Range Description: |
This species is endemic to Catalonia, Spain, where it is restricted to Montserrat's mountainous chain and the littoral mountains of the basin of Besos river, in the province of Barcelona. |
| Countries: |
Native: Spain (Spain (mainland)) |
| Range Map: |
Click here to open the map viewer and explore range. |
Population
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| Population: |
The population is thought to be decreasing as a low number of specimens have been found during surveys, and a subpopulation in the Collserola mountains can be considered extinct (Bros 2004, 2009). According to Bros (2011), the more important population of this species is found in Montcau (Natural parc of Sant Llorenç del Munt i l'Obac).
|
| Population Trend: |
Decreasing
|
Habitat and Ecology
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| Habitat and Ecology: |
This species lives on the stems of shrubs in dry places and under stones, in open rocky areas.
|
| Systems: |
Terrestrial |
| Major Threat(s): |
In the past, urbanisation was a major threat. Presently the main threats are fires and recreational activities (such as hiking and mountain biking).
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Conservation Actions
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| Conservation Actions: |
Some subpopulations of this species are included in several natural reserves. It is included in the Bern Convention and there is a proposal for its protection in Catalonia (both X. montserratensis and X. betulonensis have been proposed).
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