Common names: El Muerto Island speckled rattlesnake.Klauber LM. 1997. Rattlesnakes: Their Habitats, Life Histories, and Influence on Mankind. Second Edition. 2 volumes. Reprint, University of California Press, Berkeley. .
Crotalus mitchellii muertensis is a venomous pitviper subspecies endemic to El Muerto Island, Mexico. It is sometimes treated as a full species, Crotalus muertensis.
Description A dwarfed form, adults grow to a maximum length of .
Geographic range Known only from the type locality, which is "El Muerto Island, Gulf of California, Mexico."
Habitat It is common in all habitats within the El Muerto Island: rocks and rubble of talus slopes, scrub, hill ridges, and the intertidal zone.
Conservation status This species is classified as Least Concern (LC) on the IUCN Red List of Threatened Species. 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.
References
Further reading Klauber, L.M. 1949. Some new and revived subspecies of rattlesnakes. Trans. San Diego Soc. Nat. Hist. 11(6): 61-116.