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What is Arizona Black Rattlesnake?

 Arizona black rattlesnake is a poisonous pit viper occurring in the southwestern United States. The pitviper subspecies is mainly diurnal, but in favorable conditions, it can be active at night also. Like other pit vipers, the snake makes use of heat sensing pits located on each side of the face to detect prey and predators. Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Reptilia Order: Squamata Suborder: Serpentes Family: Viperidae Subfamily: Crotalinae Genus: Crotalus Species: Crotalus oreganus Scientific Name: Crotalus oreganus cerberus
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Black-Tailed Horned Pit Viper-Mixcoatlus Melanurus

Black-Tailed Horned Pit Viper is a venomous pit viper species endemic to the mountains of southern Mexico. No subspecies are currently recognized.

CalPhotos: Mixcoatlus melanurus; Black-tailed Horned Pitviper
Black-Tailed Horned Pit Viper
KingdomAnimalia
PhylumChordata
ClassReptilia
OrderSquamata
SuborderSerpentes
FamilyViperidae
SubfamilyCrotalinae
GenusMixcoatlus
Scientific NameMixcoatlus melanurus

Description

Adults grow to between 37.5 and 50 centimetres (14 3⁄4 and 19 5⁄8 inches) in length and have a moderately stout build. In Mexico is called necazcoatl from nahualt the words necaztli and coatl which means "earred-serpent" referring to its "horns".

Geographic range

Black-Tailed Horned Pit Viper is found in two Mexican states, southern Puebla and Oaxaca, at elevations of 1,600–2,400 m (5,200–7,900 ft). The type locality given is "Mexico."

Length

37.5 to 50 cm

Color

Ash to brownish

Distribution

Southern Mexico

Habitat

High arid tropical scrub, tropical deciduous forest, pine-oak forest

Venom Fact

Venomous

Reproduction

Viviparous (giving birth to live young)

Average Lifespan

Up to 17.1 years in captivity

IUCN Conservation Status

Endangered
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