IUCN SSC Mid-Atlantic Island Invertebrates Specialist Group

Species

BackHemicycla modesta (Férussac, 1821)

Hemicycla modesta (Férussac, 1821)

  • Kingdom: Animalia
  • Phylum:
  • Class: Mollusca
  • Order: Gastropoda
  • Family: Helicidae
CR Critically Endangered
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 only present in a small area which is under pressure from encroaching urbanisation, a major decline in habitat quality can be supposed. It is not clear currently whether this species is still extant or already extinct. It is known from a single location around the growing urbanisation area of Sta. Cruz de Tenerife with an area of occupancy of four km2. Thus, the species is considered as Critically Endangered, Possibly Extinct.

Geographic Range:

This species is endemic to the island of Tenerife, where it is endemic to a very small area near the south-eastern coast at the Bco. de Santo near Sta Cruz (Wollaston 1878).

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

Population:

There is no information available on the population size or trend of this species.

Habitat and Ecology

This species lives in the dry temperate shrub vegetation (Piso basal).

Major Threat(s):

There are no known threats to this species, but it has been described from a single location around the growing urbanisation area of Sta. Cruz de Tenerife. It can be supposed that the species is under high pressure; there is no information whether this species is still extant or already extinct.

Conservation Actions

There is no conservation action in place for this species. More research is needed on the distribution and population of this species.