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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Guerreran Pygmy Rattlesnake; ravus: The basis for reassurance is the fact that many venomous bites do not result in envenoming, the relatively crotals progression to severe envenoming hours following elapid bites, days following viper bites and the effectiveness of modern medical treatment.

If no motor crotapus or boat is available, the patient can be carried on a stretcher or hurdle, on the pillion or crossbar of a bicycle or on someone’s back. Do not use Tourniquets, cut, suck or scarify the wound or apply chemicals or electric shock.

Oaxacan Pygmy Rattlesnake; exiguus: No attempt should be made to pursue the snake into the undergrowth as this will risk further bites.

Mexican Pygmy Rattlesnake

Evolutionary morphology of the rattlesnake style. Best viewed in x resolution or higher. Mexico in the Sierra Madre rafus Sur of central Guerrero. The bitten limb must not be exercised as muscular contraction will promote systemic absorption of venom.


Antivenom Therapy Antivenom is the key treatment for systemic envenoming. Venom Neurotoxins Not likely to be present. Find more photos by Google images search: Myotoxicity Insufficient clinical reports to know.

Anfibios y Reptiles; pp. Mesa del Sur ; Type locality: Wiping it once with a damp cloth to remove surface venom is unlikely to do much harm or good but the wound must not be massaged. Treatment Summary Bites may cause mild to moderate, rarely severe local effects, non-specific general effects.

Crotalus (Sistrurus) ravus photos

Herpetological Review 10 1: Comstock Publishing Associates, Ithaca and London. The type locality given is the “Table land of Mexico.

However, we cannot access every published paper of potential relevance, either because they are not available to us or are in a language we cannot translate internally. By contrast in Piersonus gen. Mexican Pygmy Rattlesnake brunneus: They are moderately stout in build. Crotalus ravus Cope, BMC Evolutionary Biology9: Equally, crotalud cannot list knowledge which is not yet reported or known.

Multiple doses may be crotalua. Neurotoxic Paralysis Unlikely to occur. The herpetofauna of Puebla, Mexico: Mesoamerican Herpetology 2 1: A subspecies of S. Relatively short tail as compared to the snakes in the genus Sistrurus. Further, we cannot control how users will interpret the information provided on this site. Views Read Edit View history. Retrieved 4 March Canthus rostralis is rounded.


The bitten limb should be immobilised as effectively as possible using an extemporised splint or sling; if available, crepe bandaging of the splinted limb is an effective form of immobilisation.

A reclassification of the rattlesnakes; species formerly exclusively referred to the genera Crotalus and Sistrurus. We make a reasonable attempt to verify accuracy of information listed on this site.

A study using mitochondrial DNA strongly suggests that C. Evolutionary drivers of phylogeographical diversity in the highlands of Mexico: On the generic classification of the rattlesnakes, with special reference to the Neotropical Crotalus durissus complex Squamata: Crotalinaewith the description of two new species. Schuett, Mats Hoggren, Michael E. Good wound care important; avoid fasciotomies unless absolutely indicated.

If there will be considerable delay before reaching medical aid, measured in several hours to days, then give clear fluids by mouth to prevent dehydration. Mesoamerican Herpetology 4 4: By using this site, you agree to the Terms of Use and Privacy Policy.