Crotalus mitchellii angelensis

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Crotalus mitchellii angelensis
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Genus: Crotalus
Species: C. mitchellii
Subspecies: C. m. angelensis
Trinomial name
Crotalus mitchellii angelensis
Klauber, 1963
Crotalus angelensis distribution.png
Location of Angel de la Guarda Island
  • Crotalus angelensis Klauber, 1963
  • Crotalus mitchellii angelicus
    – Hoge, 1966
  • Crotalus mitchellii angelensis
    – Hoge & Romano-Hoge, 1981
  • Crotalus mitchellii angelensis
    – McCrystal & McCoid, 1986[2]

Crotalus mitchellii angelensis, or the Angel de la Guarda Island speckled rattlesnake,[3] is a venomous pitviper subspecies[4][5] endemic to Isla Ángel de la Guarda in the Gulf of California, Mexico.[5] It is sometimes treated as a full species, Crotalus angelensis.[1]


Grows to a maximum size of 137 centimetres (4.49 ft).[3]

Geographic range[edit]

Found only on Isla Ángel de la Guarda in the Gulf of California, Mexico.[3] The type locality given is "about 4 miles southeast of Refugio Bay, at 1500 feet elevation, Isla Angel de la Guarda, Gulf of California, México (near 29°29½'N, 113°33'W)" (4 miles = 6.4 km; 1,500 feet = 460 m).[2][5]


Gravelly beaches along the shore; rocky arroyos, washes, and on the hillsides of the island's interior, from sea-level up to 500 m.[1]

Conservation status[edit]

This species is classified as "Least Concern" (LC) on the IUCN Red List of Threatened Species. It occurs in a protected area and is very abundant within its small range.[1]

See also[edit]


  1. ^ a b c d Frost, D.R. (2007). "Crotalus angelensis". IUCN Red List of Threatened Species. Version 2014.3. International Union for Conservation of Nature. Retrieved 5 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 angelensis". Integrated Taxonomic Information System. Retrieved 13 September 2007. 
  5. ^ a b c Crotalus mitchellii at the Reptile Database. Accessed 13 September 2007.

Further reading[edit]

  • Klauber, L.M. 1963. A new insular subspecies of the speckled rattlesnake. Trans. San Diego Soc. Nat. Hist. 13: 73-80.