Ceylonthelphusa cavatrix


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Ceylonthelphusa cavatrix
Species Authority: (Bahir, 1998)
Taxonomic Notes: This species was formerly included in the Parathelphusidae but has recently been reassigned to the Gecarcinucidae; Parathelphusidae is now regarded as a junior synonym of Gecarcinucidae (Klause et al. in press).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Esser, L. and Cumberlidge, N.
Reviewer(s): Darwall, W. (IUCN Freshwater Biodiversity Assessment Unit), Pollock, C.M. (IUCN Red List Unit) and McIvor, A.
Listed as Endangered because it is known from only three sites, its extent of occurrence and area of occupancy are 10 km², and although it is found in a protected area, this area is still subject to degradation from human impacts implying a continuing loss of habitat quality.
2006 Not Evaluated

Geographic Range [top]

Range Description: Sri Lanka: Knuckles Mountains (Pathanegala near Puwakpitea, 07.33°N, 80.44°E, 10 km²) (Bahir 1998, Ng and Tay 2001). Conservation assessment of Bahir et al. (2005) indicates that it is present in three localities, other two locations not given.
Sri Lanka
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Abundance of the species at site of occurrence: rare
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Under moist stones and wet soil about 40 cm beneath ground level, at a small waterfall
Systems: Freshwater

Threats [top]

Major Threat(s): Habitat loss and pollution. Found in a protected area administered by Forest Department, but this PA is subject to degradation because of direct human impacts.

Conservation Actions [top]

Conservation Actions: No conservation measures are known to be in place for this species but it is found in a protected area.

Citation: Esser, L. and Cumberlidge, N. 2008. Ceylonthelphusa cavatrix. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 04 September 2015.
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