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Sistrurus ravus is a venomous pit viper species, found only in Mexico. Three subspecies are currently recognized, including the nominate subspecies described. PDF | On Jun 1, , Rafael Alejandro Calzada-Arciniega and others published Crotalus ravus (Mexican Pygmy Rattlesnake) Diet. PDF | On Sep 30, , Anibal Díaz de la Vega-Pérez and others published Natural History Notes: Crotalus ravus, diet.

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A reclassification of the rattlesnakes; species crotalys exclusively referred to the genera Crotalus and Sistrurus. In Sistrurus, the upper preocular is in contact with the postnasal, the rostral is not curved over the snout, cathus rostralis is sharply angled, dorsal body blotches are square or wider than long. This page was last edited on 27 Novemberat Crotalinaewith the description of two new species”.

Crotalus (Sistrurus) ravus photos

Multiple doses may be required. A preliminary account of the rattlesnakes with the descriptions of four new subspecies. Guerreran Pygmy Rattlesnake; ravus: Tweet Please submit feedback about this entry to the curator.

Can grow to a maximum of about 0. These effects would be uncommon and might occur in a few cases. Geographic variation in the Mexican Pygmy rattlesnake, Sistrurus ravus, with the description of a new subspecies. Mexico in the highlands of Oaxaca. First aid for bites by Viperid crotalsu likely to cause significant local injury at the bite site see listing in Comments section.


Mexico central plateau ; Type locality: Crotalus ravus ravus central plateau pygmy rattlesnake.

Mexican Pygmy Rattlesnake

Oaxacan Pygmy Rattlesnake; exiguus: The principle aim of this site is to provide information useful to crptalus outcomes for humans suffering from envenoming or poisoning by animals, plants or mushrooms. A study using mitochondrial DNA strongly suggests that C.

Many will be terrified, fearing sudden death and, in this mood, they may behave irrationally or even crotauls. The bitten limb must not be exercised as muscular contraction will promote systemic absorption of venom.

ceotalus Eyes are moderately small to medium in size with vertically elliptical pupils. Third contribution to the herpetology of tropical America. Habitat Elevations between about and metres in pine-oak forest, cloud forest, boreal forest, upper and tropical scrub forest and upper deciduous forest.

Canthus rostralis rauvs rounded. Mesoamerican Herpetology 3 4: Amphibians and reptiles of the state of Hidalgo, Mexico. UTA R, an adult male; paratypes: We make a reasonable attempt to verify accuracy of information listed on this site. Mesoamerican Herpetology 3 3: Three subspecies are currently recognized, including the nominate subspecies described here.


Dangerousness Mild envenoming only, not likely to prove lethal.

Herpetological Review 42 3: Crotalus ravus COPE A follow-up study using seven nuclear markers places S. Good wound care important; avoid fasciotomies unless absolutely indicated. Journal of Biogeography An updated checklist of the herpetofauna from Guerrero, Mexico.

Diet and accidental mortality involving a Rafus spinosus. Mesa del Sur ; Type locality: Head is broad and distinct from narrow neck. A Catalogue of Living and Extinct Species.

Crotalud basis for reassurance is the fact that many venomous bites do not result in envenoming, the relatively slow progression to severe envenoming hours following elapid bites, days following viper bites and the effectiveness of modern medical treatment. Dorsal scales are moderately keeled. Crotalus ravus Conservation status. The bite wound should not be tampered with in any way.