The Central American Rattlesnake is large, it can grow up to cm, but the average adult ranges between and cm. It has a robust body, a relatively . Snake venomics of the Central American rattlesnake Crotalus simus and the South American Crotalus durissus complex points to neurotoxicity as an adaptive . Crotalus simus is a venomous pit viper species found in Mexico and Central America. The specific epithet is Latin for ‘flat-nosed’, likely because its head is blunt.

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A large proportion The following should also be noted when reading information contained within the databases on this website: Its most relevant characteristic is the presence of a rattle. 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. Venom Neurotoxins Presynaptic neurotoxins.

If the bite is on a limb, a broad bandage even torn strips of clothing or pantyhose should be applied over the bitten area at moderate pressure as for a sprain; not so tight circulation is impairedthen extended to cover as much of the bitten limb as possible, including fingers or toes, going over the top of clothing rather than risking excessive limb movement by removing clothing.

Venom Procoagulants Present but not defined. No attempt should be made to pursue the snake into the undergrowth as this will risk further bites. A Taxonomic and Geographic Reference, vol. Reprint, University of California Press, Berkeley. The specific epithet is Latin for “flat-nosed”, likely because its head is blunt compared with lanceheads Bothrops. The similar venom toxin profiles of newborn C. The Rattlesnake lives in the low lands of the provinces of Guanacaste and the north of Puntarenas, where it is relatively common on the edges of forests and unperturbed areas.


Best viewed in x resolution or higher. Costa Rican snakes of the tropical dry forest.

A reclassification of cfotalus rattlesnakes; species formerly exclusively referred to the genera Crotalus and Sistrurus.

In marked contrast, venom from adult C. Articles with ‘species’ microformats All articles with unsourced statements Articles with unsourced statements from September Commons category link from Wikidata Use dmy dates from September Comstock Publishing Associates, Ithaca and London.

Retrieved from simua https: Seek urgent medical attention. Can grow to a maximum of about 1. Web pages and scripting Jiri Hosek.

IUCN Red List of Threatened Species

Avoid peroral intake, absolutely no alcohol. Dangerousness Clinical effects uncertain, but related to medically important species, therefore major envenoming cannot be excluded.

WilliamsJeff Boundy Mesoamerican Herpetology 4 3: This page was last edited on 12 Novemberat We report a comparative venomic and antivenomic characterization of the venoms of newborn and adult specimens of the Central American rattlesnake, Crotalus simus, and of the subspecies cumanensis, durissus, ruruima, and terrificus of South American Crotalus durissus.

Snakes of the World: A Catalogue of Living and Extinct Species. 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. Three subspecies are recognized, including the nominate subspecies described here. Neonate and adult C. Noteworthy distributional records for the herpetofauna of Chiapas, Mexico.

Crotalus simus | Instituto Clodomiro Picado

An updated list of the amphibians and reptiles of Honduras, with comments on their nomenclature. 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.


Integrated Taxonomic Crotslus System.

The Central American Rattlesnake is large, it can grow up to cm, but the average adult ranges between and cm. What the rattlesnake actually symbolizes is unknown, but crotaluss temples have carved rattlesnake shapes. If the offending snake has been killed it should be brought with the patient for identification only relevant in areas where there are more than one naturally occurring venomous snake speciesbut be careful to avoid touching the head, as even a dead snake can envenom.

Taxonomic studies on rattlesnakes of Mainland Mexico. Myotoxicity Crofalus case reports for this species, crootalus related species can cause systemic myolysis. Epidemiology, Clinical Features, and Clinical Management.

Local Necrosis Insufficient clinical reports to know, but most likely does not occur. Prey Feeds mainly on lizards, rodents, small mammals and birds.

The indistinguisable immunoreactivity patterns of Skmus Rican and Venezuelan polyvalent antivenoms toward C. Mesoamerican Herpetology 2 3: The Venomous Reptiles of the Western Hemisphere.


Habitat Usually at elevations up to about m, but has been found at m Mexico Guatemala and Costa Rica. Mainly semi-arid regions, dry tropical forest, thorn forest, pine-oak forest, savanna and scrub. Other Insufficient clinical reports to know.