Craspedopoma neritoides 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Architaenioglossa Craspedopomatidae

Scientific Name: Craspedopoma neritoides (Lowe, 1860)
Taxonomic Notes: Wollaston (1878) considered the two forms described by Lowe (1860) as synonyms of the widespread species C. mucronatum, as he felt the forms overlapped with this species. He did note that the subfossil forms from Porto Santo were smaller and possibly were the form neritoides. Recently, the taxa were reviewed by Anton de Winter who considered C. neritoides to be a separate species (de Winter, pers. comm., 2005).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2010-09-30
Assessor(s): Seddon, M.
Reviewer(s): Cameron, R., Groh, K. & Cuttelod, A.

Seddon (2008) assessed this species as Near Threatened (version 3.1) noting that species meets the range criteria for Vulnerable B1, but the presence in suitable habitats in at least 10 different valleys on the island in habitats that are protected, suggests that a lower category is merited for the species, as only the coastal habitats show signs of habitat degradation.  Hence given the presence in these valleys throughout northern Madeira and the low level of threats, the species is given a revised assessment as Least Concern (LC). 

Geographic Range [top]

Range Description:This species is found in the Madeiran islands where it is only known living on the northern side of Madeira and in the central valleys at intermediate elevations in suitable habitats in at least 10 different valleys.
Countries occurrence:
Portugal (Madeira)
Additional data:
Number of Locations:14
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is present in suitable habitats in at least 10 different valleys on the island in habitats that are protected, which suggests that it is reasonably widespread.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The species is found at low and intermediate elevations into the laurisilva zone. It is found in damp, shaded wooded areas amongst leaf-litter and mosses. Sometimes at the base of ferns and on wet grasses.

Use and Trade [top]

Use and Trade: The species is not known to be traded.

Threats [top]

Major Threat(s): The inland sites are fairly intact, with only the coastal habitats show signs of habitat degradation.  This is due to urbanisation, clearance and disturbance along the roadsides.

Conservation Actions [top]

Conservation Actions: The species is found in protected areas, although there are no specific action plans for this species. The sites near the coast are not protected, although the inland sites are sufficient at present, to protect the species from extinction.

Citation: Seddon, M. 2011. Craspedopoma neritoides. The IUCN Red List of Threatened Species 2011: e.T156801A4999624. . Downloaded on 19 March 2018.
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