IUCN SSC Mid-Atlantic Island Invertebrates Specialist Group

Species

Back • Spermodea monas (Morelet, 1860)

Spermodea monas (Morelet, 1860)

  • Kingdom: Animalia
  • Phylum:
  • Class: Mollusca
  • Order: Gastropoda
  • Family: Valloniidae
LC Least Concern
IUCN Red List Status:
  • EX
  • EW
  • CR
  • EN
  • VU
  • NT
  • LC
  • DD
  • NE

Countries of Occurrence:
Portugal - Azores

Archipelago(s):
Azores

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Assessor/s:
Frias Martins, A.

Reviewer/s:
Neubert, E. & Cuttelod, A.

Contributor/s:

Facilitators / Compilers/s:

Assessment Rationale:

This species is present on all islands in the Azores, except Corvo (Extent of occurrence = 100,000km2). Although relatively uncommon throughout the islands, it has adapted to secondary forests and faces no major threats, therefore it is considered as Least Concern (LC).

Geographic Range:

This species is recorded from all islands of the Azores, except Corvo.

Regions:
Portugal - Azores
Extent of Occurrence (EOO):
100000 (km2)
Area of Occupancy (AOO):
(km2)
Elevation Lower Limit:
150 (m)
Elevation Upper Limit:
1040 (m)
Biogeographic Realms:
Palearctic
Presence:
Extant
Origin:
Endemic Azores
Seasonality:
Resident

Population:

Morelet (1860) mentioned this species only for São Miguel and Faial, and Backhuys (1975) added São Jorge and Flores. Cunha et al. (2010) extended its range to all but Terceira and Corvo, however Spermodea monas has also been collected on Terceira (unpublished data A.Martins pers. comm. 2010).

Habitat and Ecology

Spermodea monas lives in forested habitats, endemic and secondary, although preferentially on mountainous, endemic vegetation. Relatively uncommon, it is found under dead leaves. On Pico island, it was found from 150 m to above 1,000 m (Martins et al.2006).

Major Threat(s):

This species is relatively uncommon; however, because it has adapted to secondary forests and is present on all but one island, no threats are foreseen.

Conservation Actions

No conservation measures are needed.