Species

BackHemicycla bidentalis (Lamarck, 1822)

Hemicycla bidentalis (Lamarck, 1822)

  • Kingdom: Animalia
  • Phylum:
  • Class: Mollusca
  • Order: Gastropoda
  • Family: Helicidae
LC Least Concern
IUCN Red List Status:

Countries of Occurrence:
Spain - Canaries

Archipelago(s):
Canaries

Assessor/s:
Groh, K. & Neubert, E.

Reviewer/s:
Cuttelod, A. & Bilz, M.

Contributor/s:

Facilitators / Compilers/s:


Assessment Rationale:

This species is endemic to the northern part of the island of Tenerife with a particular focus on the Anaga Mountains. There are a few isolated subpopulations in the north-western coast as far as Palo Blanco, which may be affected by increasing urbanisation, but otherwise there are no major threats to this species. Major parts of the subpopulations are under local conservation schemes. This species is considered Least Concern (LC).

Geographic Range:

This species is endemic to the northern part of the island of Tenerife with a particular focus on the Anaga Mountains. There are a few isolated subpopulations in the northwestern coast as far as Palo Blanco.

Regions:
Spain - Canaries
Extent of Occurrence (EOO):
(km2)
Area of Occupancy (AOO):
70 (km2)
Elevation Lower Limit:
(m)
Elevation Upper Limit:
(m)
Biogeographic Realms:
Paleartic
Presence:
Extant
Origin:
Endemic Canaries
Seasonality:
Resident

Population:

The size and trend within the subpopulations are stable.

Habitat and Ecology

This species colonised various habitat types from the sea level to the highest mountains: Piso basal shrubland, pine forest (Pinar), Fayal-Brezal and Laurel forest (Laurisilva).

Major Threat(s):

There are no significant threats to this species . Only the north-western populations may be affected by increasing urbanisation. This may be important in case these morphs turn out to be separate species.

Conservation Actions

Major parts of the subpopulations are under local conservation schemes. More taxonomic research is needed to assess whether these morphs will be separated into species in their own rights.