Metlapilcoatlus is a genus of venomous pit vipers endemic to Mexico and Central America. Six species are currently recognized. The common names suggest they are able to leap at an attacker, but this is likely exaggerated. Common names for the species include jumping pitvipers and jumping vipers. The genus name comes from the Nahuatl name metlapilcohuatl, which means of the oblong grindstone held in the hand when grinding corn - alluding to the snakes short stocky body.
Bothriechis is a genus of venomous pit vipers, commonly called palm vipers or palm-pitvipers found predominantly in Mexico and Central America, although the most common species, B. schlegelii, ranges as far south as Colombia and Peru. All members are relatively slender and arboreal. The name Bothriechis is derived from the Greek words bothros and echis that mean "pit" and "viper" respectively. Ten species and no subspecies are currently generally recognized.
Bothriechis lateralis is a venomous pit viper species found in the mountains of Costa Rica and western Panama. No subspecies are currently recognized.
Cerrophidion is a genus of venomous pitvipers which are endemic to southern Mexico, Central America, and western Panama. The generic name, Cerrophidion, is derived from the Spanish word cerro, which means "mountain", and the Greek word ophidion, which means "small snake". Five species are currently recognized, but no subspecies.
Bothriechis nigroviridis is a venomous pit viper species found in the mountains of Costa Rica and Panama. No subspecies are currently recognized. The specific name is derived from the Latin niger (black) and viridis (green) in reference to its distinctive color pattern.
Metlapilcoatlus olmec is a venomous pitviper species found in Mexico. No subspecies are currently recognized.
Bothriechis marchi is a species of pitviper, a venomous snake, in the subfamily Crotalinae of the family Viperidae. The species is endemic to Central America. There are no subspecies that are recognized as being valid.
Cerrophidion tzotzilorum is a venomous pit viper species which is native to southern Mexico. There are no subspecies that are recognized as being valid.
Porthidium dunni is a species of venomous pitviper in the family Viperidae. The species is endemic to Mexico. There are no recognized subspecies.
Porthidium nasutum is a venomous pitviper species found in southern Mexico, Central America and northern South America. No subspecies are currently recognized.
Porthidium lansbergii is a species of venomous snake, a pitviper in the family Viperidae. The species is endemic to Central and South America. Four subspecies are recognized, including the nominate subspecies described here.
Metlapilcoatlus mexicanus is a venomous pitviper species endemic to Mexico and Central America.
Metlapilcoatlus occiduus is a venomous pitviper subspecies endemic to southern Mexico, Guatemala, and El Salvador.
Porthidium ophryomegas is a venomous pitviper species found in Central America. No subspecies are currently recognized.
Porthidium volcanicum, the Ujarran hognosed pitviper, is a venomous pitviper species endemic to Costa Rica. No subspecies are currently recognized.
Gloydius intermedius is a venomous pitviper species endemic to northern Asia. Three subspecies are currently recognized, including the nominate subspecies described here.
Gloydius strauchi is a species of venomous pit viper in the subfamily Crotalinae of the family Viperidae. The species is native to western China. It is a small snake with a pattern of four longitudinal stripes, although some older specimens may be a uniform black. G. strauchi may be distinguished from G. monticola by its higher midbody dorsal scale count. This species jointly holds the altitude record for pitvipers together with Crotalus triseriatus of Mexico, both being found even above the tree line at over 4,000 m (13,000 ft). No subspecies were recognized as being valid, until a recent publication re-evaluated the taxonomic statuses of populations of G. strauchi and described the eastern Tibetan populations as a new species.
Bothrops medusa is a venomous pitviper species endemic to Venezuela. No subspecies are currently recognized.
Trimeresurus stejnegeri chenbihuii, commonly known as the Chen's bamboo pitviper, is a subspecies of venomous pitviper in the family Viperidae. The subspecies is endemic to Hainan Island in China.
Bothrocophias campbelli, commonly known as Campbell's toadheaded viper, the Ecuadorian toadheaded pitviper, and víbora boca de sapo in Spanish, is a species of venomous pitviper in the family Viperidae. The species is endemic to South America. No subspecies are currently recognized.
