| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | REPTILIA | SQUAMATA | VIPERIDAE |
| Scientific Name: | Crotalus pusillus |
| Species Authority: | Klauber, 1952 |
| Red List Category & Criteria: | Endangered B1ab(iii) ver 3.1 |
| Year Assessed: | 2007 |
| Assessor/s | Ponce-Campos, P. & García Aguayo, A. |
| Evaluator/s: | Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating Team) |
|
Justification: Listed as Endangered because it is currently known from less than five locations, with a total extent of occurrence of less than 5,000 km², and there is an ongoing decline in the extent and quality of its habitat. |
|
| Range Description: | This species is endemic to Mexico. Disjunct locations are recognized; southwestern Michoacan in the Sierra de Coalcoman and in the northeast in eastern Volcanic Belt, and in the extreme western Volcanic Belt in southern Jalisco and adjacent Colima. |
| Countries: |
Native:
Mexico
|
| Range Map: |
(click map to view full version)
|
| Population: | No population information is available for this species. Currently no studies focusing on this snake are known to be underway. |
| Population Trend: |
Unknown
|
| Habitat and Ecology: | It appears mostly to be restricted to pine-oak forest, usually in areas of volcanic rock and outcroppings. |
| Systems: | Terrestrial |
| Major Threat(s): | Habitat loss for agriculture and human settlement is the main threat, although it is not known how serious this is to the population. |
| Conservation Actions: | It occurs within Colima Volcano protected area. |
| Citation: | Ponce-Campos, P. & García Aguayo, A. 2007. Crotalus pusillus. In: IUCN 2009. IUCN Red List of Threatened Species. Version 2009.2. <www.iucnredlist.org>. Downloaded on 09 February 2010. |
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