Crotalus mitchellii muertensis

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Crotalus mitchellii muertensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Subfamily: Crotalinae
Genus: Crotalus
Species: C. mitchellii
Subspecies: C. m. muertensis
Trinomial name
Crotalus mitchellii muertensis
Klauber, 1949
  • Crotalus mitchellii muertensis Klauber, 1949
  • Crotalus mitchelli [sic] muertensisKlauber, 1949
  • Crotalus mitchellii muertensis
    – McCrystal & McCoid, 1986[2]
Common names: El Muerto Island speckled rattlesnake.[3]

Crotalus mitchellii muertensis is a venomous pitviper subspecies[4][5] endemic to El Muerto Island, Mexico. It is sometimes treated as a full species, Crotalus muertensis.[1]


A dwarfed form, adults grow to a maximum length of 63.7 centimetres (25.1 in).[3]

Geographic range[edit]

Known only from the type locality,[3] which is "El Muerto Island, Gulf of California, Mexico."[2]


It is common in all habitats within the El Muerto Island: rocks and rubble of talus slopes, scrub, hill ridges, and the intertidal zone.[1]

Conservation status[edit]

This species is classified as Least Concern (LC) on the IUCN Red List of Threatened Species.[1] 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.[6]

See also[edit]


  1. ^ a b c d Frost, D.R. (2007). "Crotalus muertensis". IUCN Red List of Threatened Species. Version 2014.3. International Union for Conservation of Nature. Retrieved 1 March 2015. 
  2. ^ 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).
  3. ^ 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.
  4. ^ "Crotalus mitchellii muertensis". Integrated Taxonomic Information System. Retrieved 13 September 2007. 
  5. ^ Crotalus mitchellii at the Reptile Database. Accessed 1 February 2015.
  6. ^ 2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 13 September 2007.

Further reading[edit]

  • Klauber, L.M. 1949. Some new and revived subspecies of rattlesnakes. Trans. San Diego Soc. Nat. Hist. 11(6): 61-116.