IUCN SSC Mid-Atlantic Island Invertebrates Specialist Group

Species

BackCaseolus punctulatus (G.B. Sowerby I, 1824)

Caseolus punctulatus (G.B. Sowerby I, 1824)

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

Countries of Occurrence:
Portugal - Madeira

Archipelago(s):
Madeira

Assessor/s:
Seddon, M.B.

Reviewer/s:
Cameron, R., Groh, K., Cuttelod, A. & Neubert, E.

Contributor/s:

Facilitators / Compilers/s:


Assessment Rationale:

This species is restricted to Madeiran islands where two different subspecies are found on Porto Santo. It is often abundant at sites. The mainland populations are susceptible, given the multiple threats causing habitat degradation and impact of non-native species. However, the present population abundance, the fairly wide distribution, number of sites and presence in degraded habitat, suggests that not highly threatened. However, the species is currently viewed as Least Concern (LC).

Geographic Range:

This species is restricted to Madeiran islands where two different subspecies are found on Porto Santo.

Regions:
Portugal - Madeira
Extent of Occurrence (EOO):
(km2)
Area of Occupancy (AOO):
(km2)
Elevation Lower Limit:
(m)
Elevation Upper Limit:
(m)
Biogeographic Realms:
Palearctic
Presence:
Extant
Origin:
Endemic Madeira
Seasonality:
Resident

Population:

This species is thought to be stable. It is often abundant at sites.

Habitat and Ecology

It occurs in arid zones close to the ground, under rocks.

Major Threat(s):

Habitat loss from tourist development or habitat degradation due to invasive species (plants), fire or tipping or loss of populations due to introduced rodents are affecting part of the range of this species.

Conservation Actions

No conservation actions are known for this species, however none are considered necessary, other than taxonomic work to verify the presence of two distinct species.