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Crotalus oreganus caliginis
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Viperidae
Genus:	Crotalus
Species:	C. oreganus
Subspecies:	C. o. caliginis
Trinomial name
	Crotalus oreganus caliginis; Klauber, 1949
	Location of South Coronado Island
Synonyms
	Crotalus viridis caliginis ; Klauber, 1949; Crotalus oreganus caliginis ; – Ashton & de Queiroz, 2001;

Common names: Coronado Island rattlesnake.^[3]

Crotalus oreganus caliginis is a venomous pit viper subspecies^[4] endemic to South Coronado Island, Mexico.

Description

Adults grow to a maximum size of 68.3 cm (26+7⁄8 in).^[3]

Geographic range

Known only from the type locality,^[3] given as "South Coronado Island, off the northwest coast of Baja California, Mexico."^[1]

Conservation status

This species is classified as least concern on the IUCN Red List of Threatened Species (v3.1, 2001).^[5] Species are listed as such due to their wide distribution, presumed large population, or because it is unlikely to be declining fast enough to qualify for listing in a more threatened category. The population trend was stable when assessed in 2007.^[6]

References

^ ^a ^b McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
^ Ashton KG, de Queiroz A. 2001. Molecular systematics of the western rattlesnake, Crotalus viridis (Viperidae), with comments on the utility of the d-loop in phylogenetic studies of snakes. Molecular Phylogenetics and Evolution, Vol. 21, No.2, pp. 176-189. PDF Archived 2007-09-29 at the Wayback Machine at CNAH. Accessed 3 September 2008.
^ ^a ^b ^c Klauber LM. 1997. Rattlesnakes: Their Habitats, Life Histories, and Influence on Mankind. Second Edition. 2 volumes. Reprint, University of California Press, Berkeley. ISBN 0-520-21056-5.
^ "Crotalus oreganus caliginis". Integrated Taxonomic Information System. Retrieved 13 September 2007.
^ Crotalus caliginis at the IUCN Red List. Accessed 13 September 2007.
^ 2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 13 September 2007.

External links

Crotalus oreganus at the Reptarium.cz Reptile Database. Accessed 13 September 2007.

[McD99-1] McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).

[A&Q01-2] Ashton KG, de Queiroz A. 2001. Molecular systematics of the western rattlesnake, Crotalus viridis (Viperidae), with comments on the utility of the d-loop in phylogenetic studies of snakes. Molecular Phylogenetics and Evolution, Vol. 21, No.2, pp. 176-189. PDF Archived 2007-09-29 at the Wayback Machine at CNAH. Accessed 3 September 2008.

[Kla97-3] Klauber LM. 1997. Rattlesnakes: Their Habitats, Life Histories, and Influence on Mankind. Second Edition. 2 volumes. Reprint, University of California Press, Berkeley. ISBN 0-520-21056-5.

[ITIS-4] "Crotalus oreganus caliginis". Integrated Taxonomic Information System. Retrieved 13 September 2007.

[ICUN-5] Crotalus caliginis at the IUCN Red List. Accessed 13 September 2007.

[ICUN-31-6] 2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 13 September 2007.

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