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Genus

Crotalus

52 species

The list of species of Crotalus genus

Crotalus is a genus of venomous pit vipers in the family Viperidae, known as rattlesnakes or rattlers. The genus is found only in the Americas from southern Canada to northern Argentina, and member species are colloquially known as rattlesnakes. The generic name Crotalus is derived from the Greek word κρόταλον krótalοn, which means "rattle" or "castanet", and refers to the rattle on the end of the tail, which makes this group so distinctive. Currently, 32 to 45 species are recognized as being valid.

The genus Crotalus is found in the Americas from southern Canada to central Argentina.

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The list of species of Crotalus genus

The genus Crotalus is found in the Americas from southern Canada to central Argentina.

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Timber Rattlesnake

Crotalus horridus

The Timber rattlesnake (Crotalus horridus ) is a species of venomous, sometimes highly venomous, pit viper endemic to eastern North America. This is the only rattlesnake species in most of the populous Northeastern United States and is second only...

Western Diamondback Rattlesnake

Crotalus atrox

The Western diamondback rattlesnake (Crotalus atrox) is a venomous rattlesnake species found in the United States and Mexico. It is likely responsible for the majority of snakebite fatalities in northern Mexico and the greatest number of snakebites...

Eastern Diamondback Rattlesnake

Crotalus adamanteus

The Eastern diamondback rattlesnake (Crotalus adamanteus) is a species of venomous pit viper that is found only in the southeastern United States. It has the reputation of being the most dangerous venomous snake in North America.

Sidewinder

Crotalus cerastes

The sidewinder (Crotalus cerastes) is a venomous pit viper species belonging to the genus Crotalus (the rattlesnakes). It is found in the desert regions of North America.

Mojave Rattlesnake

Crotalus scutulatus

The Mojave rattlesnake (Crotalus scutulatus) is a highly venomous pit viper species found in North America. It is perhaps best known for its potent neurotoxic-hemotoxic venom, which is considered one of the world's most potent rattlesnake venoms.

Prairie Rattlesnake

Crotalus viridis

The Prairie rattlesnake (Crotalus viridis) is a venomous pit viper species native to North America. Currently, two subspecies are recognized, including the Prairie rattlesnake, the nominate subspecies, and the Hopi rattlesnake.

Black-Tailed Rattlesnake

Crotalus molossus

The Black-tailed rattlesnake (Crotalus molossus) is a venomous pit viper species found in the southwestern United States and Mexico. Alternate common names of this snake are Green rattler and Northern black-tailed rattlesnake.

Western Rattlesnake

Crotalus oreganus

Western rattlesnake, commonly known as the (northern) Pacific rattlesnake, is a venomous pit viper species found in western North America from the Baja California Peninsula to the southern interior of British Columbia.

South American Rattlesnake

Crotalus durissus

Crotalus durissus is a highly venomous pit viper species found in South America. It is the most widely distributed member of its genus. Currently, seven subspecies are recognized.

Southern Pacific Rattlesnake

Crotalus helleri

The Southern Pacific rattlesnake (Crotalus helleri) is a pit viper species or subspecies that is known for its regional variety of dangerous venom types. It is sometimes considered a subspecies of the Northern Pacific rattlesnake (Crotalus oreganus).

Arizona Black Rattlesnake

Crotalus cerberus

The Arizona black rattlesnake (Crotalus cerberus) is a venomous pit viper species found in the southwestern United States. Like all other vipers, this species is distinguished by the presence of a heat-sensing pit organ located between the eye and...

Red Diamond Rattlesnake

Crotalus ruber

The Red diamond rattlesnake (Crotalus ruber) is a venomous pit viper species found in the United States and in Mexico. These snakes are unique due to a common characteristic - a deep pit, or fossa, in the loreal area between the eye and the nostril...

Great Basin Rattlesnake

Crotalus lutosus

The Great Basin rattlesnake (Crotalus lutosus) is a venomous pit viper species found in the United States. It was first formally named by Laurence Monroe Klauber in 1930 as a subspecies of Crotalus confluentus (now known as Crotalus viridis). The...

Aruba Island Rattlesnake

Crotalus unicolor

The Aruba Island rattlesnake (Crotalus unicolor) is a venomous pitviper species. It is native to the island of Aruba and is among the rarest rattlesnakes in the world.

Rock Rattlesnake

Crotalus lepidus

The Rock rattlesnake (Crotalus lepidus) is a venomous pit viper species found in the southwestern United States and northern central Mexico. Pit vipers have a pair of extremely sensitive infrared-detecting organs, which in effect give the snakes a...

Tiger Rattlesnake

Crotalus tigris

The tiger rattlesnake (Crotalus tigris ) is a highly venomous pit viper species found in the southwestern United States and northwestern Mexico. No subspecies are currently recognized. The specific name tigris, Latin for "tiger", refers to the many...

Crotalus willardi

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...

Midget Faded Rattlesnake

Crotalus concolor

The Midget faded rattlesnake (Crotalus concolor) is a venomous pit viper species found in the western United States. It is a small rattlesnake known for its faded color pattern.

Crotalus mitchellii

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...

Crotalus catalinensis

The Santa Catalina rattlesnake (Crotalus catalinensis ) is a species of venomous pit viper endemic to Isla Santa Catalina in the Gulf of California just off the east coast of the state of Baja California Sur, Mexico. No subspecies are currently...

Crotalus basiliscus

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...

Crotalus oreganus abyssus

Crotalus oreganus abyssus is a venomous pit viper subspecies found only in the U.S. states of Arizona and Utah.

Crotalus simus

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...

Crotalus viridis nuntius

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,...

Crotalus enyo

Crotalus enyo is a venomous pit viper species native to the coast and islands of northwestern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.

Crotalus lepidus klauberi

Crotalus lepidus klauberi is a venomous pitviper subspecies endemic to the southwestern United States and adjacent northern Mexico.

Crotalus aquilus

Crotalus aquilus is a venomous pit viper species found in the highlands of central Mexico. No subspecies is currently recognized. The specific name, aquilus, is Latin for "eagle" and refers to the high altitude at which this species is found.

Crotalus cerastes cercobombus

Crotalus cerastes cercobombus is a venomous pitviper subspecies found in an area that covers much of the eastern part of the Sonoran Desert in the southwestern United States and northwestern Mexico. The subspecific epithet means buzzertail.

Crotalus pyrrhus

Crotalus pyrrhus is a venomous pitviper species found in the southwestern United States and northwestern Mexico. A medium-sized snake, it is found mostly in rocky country, active at night and feeding on small mammals. The coloration is variable and...

Crotalus pricei

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.

Crotalus triseriatus

Crotalus triseriatus is a venomous pit viper species found in Mexico. Two subspecies are currently recognized, including the nominate subspecies described here.

Crotalus ravus

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 vegrandis

Crotalus vegrandis is a venomous pitviper species found only in Venezuela in South America.

Crotalus stephensi

Crotalus stephensi is a venomous pitviper species found in central and southern Nevada and adjacent California. Common names include panamint rattlesnake, panamint rattler, Owens Valley rattler, and tiger rattlesnake (not to be confused with C....

Crotalus polystictus

The Mexican lance-headed rattlesnake or lance-headed rattlesnake (Crotalus polystictus ) is a venomous pit viper species found in central Mexico. No subspecies is currently recognized.

Crotalus cerastes laterorepens

Crotalus cerastes laterorepens, with the common name Colorado Desert sidewinder, is a venomous pitviper subspecies found in an area that centers on the Sonoran Colorado Desert in Southern California. It is also native to the Sonoran Desert in the...

Crotalus intermedius

Crotalus intermedius (common name Mexican small-headed rattlesnake) is a venomous pit viper species found in central and southern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.

Crotalus atrox tortugensis

Crotalus atrox tortugensis is a venomous pit viper subspecies found only on Tortuga Island in the Gulf of California.

Crotalus stejnegeri

Crotalus stejnegeri, commonly known as the Sinaloan long-tailed rattlesnake or just long-tailed rattlesnake, is a venomous pit viper species in the family Viperidae. The species is native to western Mexico. There are no recognized subspecies.

Crotalus willardi obscurus

Crotalus willardi obscurus is a venomous pitviper subspecies found in northwestern Mexico and the Southwestern United States.

Crotalus lorenzoensis

Crotalus lorenzoensis is a species of pitviper, a venomous snake in the subfamily Crotalinae of the family Viperidae. The species is endemic to San Lorenzo Sur Island, Mexico.

Crotalus angelensis

Crotalus angelensis, or the Ángel de la Guarda Island speckled rattlesnake, is a venomous pitviper species endemic to Isla Ángel de la Guarda in the Gulf of California, Mexico. It is sometimes treated as a subspecies of Crotalus mitchellii.

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