IUCN SSC Mid-Atlantic Island Invertebrates Specialist Group

Species

Back • Heterostoma desertae (Mandahl-Barth, 1950)

Heterostoma desertae (Mandahl-Barth, 1950)

  • Kingdom: Animalia
  • Phylum:
  • Class: Mollusca
  • Order: Gastropoda
  • Family: Hygromiidae
DD Data Deficient
IUCN Red List Status:
  • EX
  • EW
  • CR
  • EN
  • VU
  • NT
  • LC
  • DD
  • NE

Countries of Occurrence:
Portugal - Madeira

Archipelago(s):
Madeira

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Assessor/s:
Seddon, M.B.

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

Contributor/s:

Facilitators / Compilers/s:

Assessment Rationale:

Bank et al. (2002) list the species as endemic to Madeira, where it is present at the eastern end only, and on the Desertas. However the taxonomic issues discussed in taxonomic notes, led Cameron and Cook (1999) and subsequent unpublished surveys (Cameron, pers. comm., 2010) and Seddon (2008) to conclude that only one species Heterostoma paupercula was present on Madeira and the Desertas. No conservation action are in place, but it requires further research to determine the status as a valid species. It is listed as Data Deficient (DD), but if considered a valid species then it is abundant in the grasslands and open sandy areas with no specific threats, so would become Least Concern.

Geographic Range:

Bank et al. (2002) list the species as endemic to Madeira, where it is present at the eastern end only, and on the Desertas. However the taxonomic issues discussed in taxonomic notes, led Cameron and Cook (1999) and subsequent unpublished surveys (Cameron, pers. comm., 2010) and Seddon (2008) to conclude that only one species Heterostoma paupercula was present on Madeira and the Desertas.

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:

If considered a valid species, then it is abundant in the grasslands and open sandy areas.

Habitat and Ecology

If considered a valid species, then it is abundant in the grasslands and open sandy areas.

Major Threat(s):

If considered a valid species, then it is abundant in the grasslands and open sandy areas with no specific threats.

Conservation Actions

There are no conservation action in place, but it requires further research to determine the status as a valid species, then it is abundant in the grasslands and open sandy areas with no specific threats.