Species

BackNapaeus alabastrinus Frias Martins, 1989

Napaeus alabastrinus Frias Martins, 1989

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

Countries of Occurrence:
Portugal - Azores

Archipelago(s):
Azores

Assessor/s:
Frias Martins, A.

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

Contributor/s:

Facilitators / Compilers/s:


Assessment Rationale:

This species occurs on Terceira and Pico islands and has an extent of occurrence of 5000km2. It occupies a wide range of habitats, and has adapted to disturbed environments and is not facing major threats, therefore it is considered as Least Concern (LC).

Geographic Range:

This species is found on Terceira and Pico islands, Azores, Portugal. It was recorded for Pico island by Nobre (1924) as Bulimus pruninus, Martins et al. (2006) as Napaeus cf.alabastrinus, and Cunha et al. (2010).

Regions:
Portugal - Azores
Extent of Occurrence (EOO):
5000 (km2)
Area of Occupancy (AOO):
(km2)
Elevation Lower Limit:
10 (m)
Elevation Upper Limit:
350 (m)
Biogeographic Realms:
Palearctic
Presence:
Extant
Origin:
Endemic Azores
Seasonality:
Resident

Population:

On Terceira this species is relatively common near the town of Praia da Vitória (Fonte Dionísio, Cabo da Praia) and is also found in Quatro Ribeiras and Raminho.  A small colony near Angra do Heroísmo (Silveira), situated by the side of the road, has not been seen since 1987. 
On Pico this species is rare; found only near Cais do Pico, Terra Alta and on Cabeço do Monte Escuro (near Piedade).

Habitat and Ecology

Although not commonly found, N. alabastrinus occupies a wide range of habitats, from clumps of reeds in dune areas, hydrangeas and stone walls by the road side to mixed forest of Pittosporum undulatum and Accacia.

Major Threat(s):

Due to its capacity to adapt to disturbed environments, no threats are foreseen.

Conservation Actions

No conservation measures are needed.