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Helodermatidae is a family of terrestrial lizards whose only genus is Heloderma, which includes the only venomous lizards on the American continent. The family consists of two species native to the southwestern United States, Mexico and Guatemala, which prefer semiarid habitats. 2 species occur in Mexico. Heloderma horridum (Wiegmann, 1829) VU
The Common death adder (Acanthophis antarcticus) is a highly venomous snake species with a 50–60% untreated mortality rate. [87] It is also the fastest striking venomous snake in the world. [88] A death adder can go from a strike position, to strike and envenoming their prey, and back to strike position again, in less than 0.15 seconds. [88]
Few accidents are caused by elapids (with 78 species) in Latin America, which are represented by coral snakes, of the genera Leptomicrurus (Amazonia) Micruroides (Mexico), Micrurus which is the most widely distributed, and sea snakes, with one species, the Yellow-bellied sea snake, found in Mexico, Central America and north South America.
Gaige (1936) cites one case in which a woman in Motul, Yucatán, Mexico was bitten by a 30 cm (11 + 3 ⁄ 4 in) specimen and died within a few hours. Alvarez del Toro (1983) reports gangrenous tissue falling away in fragments, eventually to expose the underlying bones, describing this is as "spontaneous amputation" of the necrotic wound.
Crotalus cerastes, known as the sidewinder, horned rattlesnake or sidewinder rattlesnake, [3] is a pit viper species belonging to the genus Crotalus (the rattlesnakes), and is found in the desert regions of the Southwestern United States and northwestern Mexico. Like all other pit vipers, it is venomous. Three subspecies are currently ...
The species is endemic to western Mexico. Like all other pit vipers, it is venomous. The specific name, basiliscus, is derived from the Greek word for king, βασιλισκος (basiliskos), and alludes to this snake's large size and potent venom. [3] No subspecies are currently recognized. [5]
Micrurus browni, commonly known as Brown's coral snake, is a species of venomous snake in the family Elapidae. The species is native to Guatemala and southwestern Mexico . [ 2 ] There are three recognized subspecies , including the nominate subspecies described here.
Micrurus nigrocinctus, commonly known as the Central American coral snake, is a species of a highly venomous snake in the family Elapidae. The species is endemic to Latin America from southern Mexico, Central America, to north Colombia. [3] There are six recognized subspecies, including the nominate subspecies described here. [4]