Crotalus pusillus
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Crotalus pusillus, or the Tancitaran Dusky Rattlesnake, is a venomous pit viper species found in west-central Mexico. No subspecies are currently recognized.[1]
Description
Adult males may grow to more than Script error: No such module "convert". in length, while females are smaller. The largest recorded length for a specimen was Script error: No such module "convert"..[2]
Behavior
Campbell and Lamar (2004) found this species only to be active during the day. Within its range, night temperatures are low and seem to restrict its activity.[2]
Geographic range
It is found in west-central Mexico in the Sierra de Coalcomán of southwestern Michoacán, the Transverse Volcanic Cordillera of west-central Michoacán, and in adjacent Jalisco. It is probably also found in northeastern Colima. Its type locality is reported as "Tancítaro, Michoacán, Mexico, altitude 5,000 ft" (5,000 ft = 1,524 m).[3] It occurs at elevations between Script error: No such module "convert"..[2]
Conservation status
This species is classified as Endangered on the IUCN Red List of Threatened Species. The population trend was unknown when assessed in 2007.[4]
References
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- ↑ a b c Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. Template:ISBN.
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- ↑ 2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 13 September 2007.
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Further reading
- Klauber, L.M. 1952. Taxonomic studies on rattlesnakes of Mainland Mexico. Bull. Zool. Soc. San Diego 26:1-143.
External links
- Crotalus pusillus at the Reptarium.cz Reptile Database. Accessed 12 December 2007.