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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Mesoamerican Herpetology 3 4: The following should also be noted when reading information contained within the databases on this website: Geographic variation in the Mexican Pygmy rattlesnake, Sistrurus ravus, with the description of a new subspecies.

If no motor vehicle 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. Mesoamerican Herpetology 4 4: Snakes of the Mexican state of Morelos.

The snakebite victim should be transported as quickly and as passively as possible to the nearest place where they can be seen by a medically-trained person health station, dispensary, clinic or hospital.

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.

Mexican Pygmy Rattlesnake (Crotalus ravus) ·

crootalus A reclassification of the rattlesnakes; species formerly exclusively referred to the genera Crotalus and Sistrurus. Mexico in the highlands of Oaxaca. These include local cauterization, incision, excision, amputation, ravys by mouth, vacuum pump or syringe, combined incision and suction “venom-ex” apparatusinjection or instillation of compounds such as potassium permanganate, phenol carbolic soap and trypsin, application of electric shocks or ice cryotherapyuse of traditional herbal, folk and other remedies including the ingestion of emetic plant products and parts of the snake, multiple incisions, tattooing and so on.


Treatment Summary Bites may cause mild to moderate, rarely severe local effects, non-specific general effects. Douglas, and Harry W. Many will be terrified, fearing sudden death and, in this mood, they may behave irrationally or even hysterically.

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. Venom Haemorrhagins Present but not defined. Crotalinaewith rafus description of two new species”.

A subspecies of S. In particular, for bites causing flaccid paralysis, including respiratory paralysis, both airway and respiration may be impaired, requiring urgent and prolonged treatment, which may include the mouth to mask mouth to mouth technique of expired air transfer.

General Systemic Effects Variable non-specific effects which may include headache, nausea, vomiting, abdominal pain, diarrhoea, dizziness, collapse or convulsions.

Crotalus ravus |

The bite wound should not be tampered with in any way. Web pages and scripting Jiri Hosek. Guerreran Pygmy Rattlesnake; ravus: Retrieved from ” https: The distinguishing characteristics for C.

Find more photos by Google images search: Snake Species of the World: Multilocus species delimitation in the Crotalus triseriatus species group Serpentes: Multiple doses may be required. Crotalus ravus COPE, Evolutionary morphology of the rattlesnake style. Small Ravuw 20k version. Habitat Elevations between about and metres in pine-oak forest, cloud forest, boreal forest, upper and tropical scrub forest and upper deciduous forest.


They are moderately stout in build. Can grow to a maximum of about 0.

Only more severe cases require antivenom. Crotalus ravus COPE Key Diagnostic Features Local pain, swelling, blistering, rarely necrosis.

Mexican Pygmy Rattlesnake

It should not be assumed that humankind currently knows all there is to know about any species, even for common species. Further, we cannot control how users will interpret the information provided on this rqvus. Eyes are moderately small to medium in size with vertically elliptical pupils.

PLoS One 9 6: Sierra Madre del Sur ; Type locality: After ensuring the patient and onlookers have moved out of range of further strikes by the snake, the bitten person should be reassured and persuaded to lie down and remain still. Crotalus ravus is a venomous pit viper species, found only in Mexico. Herpetological Review 10 1: The type locality given is the “Table land of Mexico. By contrast in Piersonus gen.

Prey Feeds mainly on lizards, rodents and small mammals and occasionally insects such as grasshoppers and crickets. Venom Nephrotoxins Not likely to be present.

Subsequently restricted to Totalco, Veracruz, by Smith and Taylor,