Thamnophis scalaris 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Natricidae

Scientific Name: Thamnophis scalaris Cope, 1861

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2007
Date Assessed: 2007-03-01
Assessor(s): Canseco-Márquez, L. & Mendoza-Quijano, F.
Reviewer(s): Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating Team)
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Geographic Range [top]

Range Description:This species is endemic to central Mexico where it occurs along the volcanic belt. It has been recorded from western and central Jalisco, Michoacan, State of Mexico, Distrito Federal, Morelos, Puebla, Tlaxcala, Hidalgo and Veracruz. It occurs between 1,800 and 3,000 m asl.
Countries occurrence:
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is a common species.
Current Population Trend:Stable
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This terrestrial species is present in primary and secondary pine, pine-oak and fir forests, where it can be found under rocks, logs, bark and leaf-litter. It has also been recorded from grasslands. It is a viviparous species.

Threats [top]

Major Threat(s): The species is threatened by deforestation through conversion of land to agricultural use and cattle pasture.

Conservation Actions [top]

Conservation Actions: The species occurs in at least three protected areas. Further research is needed into the ecology and natural history of this species.

Citation: Canseco-Márquez, L. & Mendoza-Quijano, F. 2007. Thamnophis scalaris. The IUCN Red List of Threatened Species 2007: e.T63992A12727613. . Downloaded on 25 May 2018.
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