| Crotalus totonacus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Viperidae |
| Genus: | Crotalus |
| Species: | C. totonacus |
| Binomial name | |
| Crotalus totonacus Gloyd & Kauffeld, 1940 | |
| Synonyms | |
| |
Crotalus totonacus is a venomous pit viper species found in northeastern Mexico. No subspecies are currently recognized. [4]
Adults frequently grow to more than 150 cm (4 ft 11 in) in length. The largest recorded specimen was 166.5 cm (5 ft 5 1⁄2 in) in length. [2]
It is found in northeastern Mexico from central Nuevo León through southern Tamaulipas, northern Veracruz, eastern San Luis Potosí and northern Querétaro. [2] The type locality given is "Panaco Island, about 75 miles [120 km] south of Tampico, Veracruz, Mexico, 12 miles [19 km] inland from Cabo Rojo". [1]
This species was previously considered a subspecies of C. durissus . [1]
Crotalus molossus is a venomous pit viper species found in the southwestern United States and Mexico. Four subspecies are currently recognized, including the nominate subspecies described here.
Crotalus basiliscus is a venomous pit viper species in the family Viperidae. The species is endemic to western Mexico. 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. There are no subspecies which are recognized as being valid.
Crotalus willardi is a venomous pit viper species found in the southwestern United States and Mexico. This snake is found mainly in the "sky island" region. The IUCN reports this snake's conservation status as being of Least Concern. It is the official state reptile of Arizona.
Crotalus viridis is a venomous pit viper species native to the western United States, southwestern Canada, and northern Mexico. Currently, two subspecies are recognized, including the nominate subspecies described here.
Crotalus mitchellii is a venomous pit viper species in the family Viperidae. The species is endemic to the Southwestern United States and adjacent northern Mexico. The species was named in honor of Silas Weir Mitchell (1829–1914), an American medical doctor who also studied rattlesnake venoms. Five subspecies are currently recognized, including the nominate subspecies described here.
Crotalus ravus, commonly known as the Mexican pigmy rattlesnake or Mexican pygmy rattlesnake, is a venomous pit viper species, found only in Mexico. Three subspecies are currently recognized.
Crotalus viridis nuntius is a venomous pit viper subspecies native primarily to the desert plateau of the northeastern portion of the American state of Arizona, but also ranges into northwestern New Mexico. Named for the Native American Hopi tribe, which inhabits the region, its range overlaps that of the nominate subspecies and some interbreeding is believed to occur. The taxonomy of the C. viridis group is a matter of debate, many considering the various subspecies to be nothing more than locality variations.
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 compared with lanceheads (Bothrops). Three subspecies are recognized, including the nominate subspecies described here.
Crotalus intermedius is a venomous pit viper species found in central and southern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.
Crotalus intermedius omiltemanus is a venomous pitviper subspecies found in Mexico in the state of Guerrero.
Crotalus intermedius gloydi is a subspecies of venomous pitviper in the family Viperidae. The subspecies is endemic to Mexico in the states of Oaxaca and Puebla.
Crotalus pricei is a species of venomous snake, a pit viper in the family Viperidae. The species is endemic to the southwestern United States and northern Mexico. Two subspecies are recognized, including the nominate subspecies described here.
Crotalus lannomi, known commonly as the Autlán rattlesnake, is a species of venomous snake, a pit viper in the family Viperidae. The species is endemic to southwestern Mexico. There are no subspecies that are recognized as being valid.
The Mexican lance-headed rattlesnake or lance-headed rattlesnake is a venomous pit viper species found in central Mexico. No subspecies is currently recognized.
Crotalus pusillus is a venomous pit viper species found in west-central Mexico. No subspecies is currently recognized.
Crotalus stejnegeri is a venomous pit viper species found in western Mexico. No subspecies is currently recognized.
Crotalus transversus is a venomous pit viper species found in central Mexico, known from less than 20 specimens. No subspecies are currently recognized.
Crotalus triseriatus is a venomous pit viper species found in Mexico. Two subspecies are currently recognized, including the nominate subspecies described here.
Crotalus willardi obscurus is a venomous pitviper subspecies found in northwestern Mexico and the southwestern United States.This is the only venomous snake listed as Threatened by the U.S. Fish and Wildlife Service.
Crotalus ruber lucasensis is a venomous pitviper subspecies found in Mexico in the Cape region of lower Baja California.