Xantusia extorris


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Xantusia extorris
Species Authority: Webb, 1965
Xantusia vigilis subspecies extorris Webb, 1965

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2007
Date Assessed: 2007-03-01
Assessor(s): Gadsden. H. & Santos-Barrera, G.
Reviewer(s): Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating Team)
Listed as Least Concern because, although its extent of occurrence is possibly less than 1,000 km², it occurs in an inaccessible canyon habitat within a protected area. There are no current threats to the species.

Geographic Range [top]

Range Description: This species has a restricted distribution within the Pedricenas region, in the southern portion of the Chihuahuan Desert of south-eastern Durango State, Mexico.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It can be abundant within optimal habitat (Webb 1965).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This nocturnal species inhabits desert and arid lands with a ground cover of rocks, fallen yucca plants and agaves (Webb 1965). It is a viviparous species. It is not known how well populations can adapt to habitat disturbance.
Systems: Terrestrial

Threats [top]

Major Threat(s): Other than the species restricted range, there appear to be no major threat to the species.

Conservation Actions [top]

Conservation Actions: The species occurs within the Canyon Fernandes protected area. Other than general research activities, no direct conservation measures are currently needed for this species as a whole.

Citation: Gadsden. H. & Santos-Barrera, G. 2007. Xantusia extorris. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 05 March 2015.
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