Crotalus ruber lorenzoensis

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Crotalus ruber lorenzoensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Subfamily: Crotalinae
Genus: Crotalus
Species: C. ruber
Subspecies: C. r. lorenzoensis
Trinomial name
Crotalus ruber lorenzoensis
Radcliffe & Maslin, 1975
  • Crotalus ruber lorenzoensis Radcliffe & Maslin, 1975
  • Crotalus lorenzoensis Radcliffe & Maslin, 1975
  • C[rotalus]. e[xsul]. lorenzoensis - Grismer, McGuire & Hollingsworth, 1994[2]
Common names: San Lorenzo Island rattlesnake.

Crotalus ruber lorenzoensis is a venomous pitviper subspecies[3] endemic to San Lorenzo Sur Island, Mexico. It is sometimes treated as a full species, Crotalus lorenzoensis.[1]


This subspecies usually has no rattle, and has shrunk in size compared to some of its other subspecies counterparts on the mainland.[4]

Geographic range[edit]

Known only from the type locality, which is "San Lorenzo Sur Island in the Gulf of California, Baja California Norte, Mexico."[2]


It occurs mainly in rocky areas and arroyo bottoms. It can also be found in dunes near the coast and in cavities formed by adjacent boulders.[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.[5]

See also[edit]


  1. ^ a b c d Frost, D.R. & Hollingsworth, B. (2007). "Crotalus lorenzoensis". 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. ^ "Crotalus ruber lorenzoensis". Integrated Taxonomic Information System. Retrieved 13 September 2007. 
  4. ^ Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. 2 volumes. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. ISBN 0-8014-4141-2.
  5. ^ 2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 13 September 2007.

Further reading[edit]

  • Radcliffe, C.W. and T. Paul Maslin. 1975. A New Subspecies of the Red Rattlesnake, Crotalus ruber, from San Lorenzo Sur Island, Baja California Norte, Mexico. Copeia 1975(3): 490-493.

External links[edit]