Common names: Barnett's lancehead, Barnett's pit viper.

Bothrops barnetti is a venomous

Venomous snake

"Poisonous snake" redirects here. For true poisonous snakes, see Rhabdophis.Venomous snakes are snakes which have venom glands and specialized teeth for the injection of venom...

 pitviper

Crotalinae

The Crotalinae, commonly known as "pit vipers" or crotaline snakes, are a subfamily of venomous vipers found in Asia and the Americas. They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on either side of the head...

 species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 endemic to Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

. No subspecies are currently recognized.

Bothrops barnetti is patterned in white and black triangles. It usually grows until 120 cm, whereas the females are quite smaller and thinner. The body is heavily shaped and stockily.

Common names

English common names for this species are Barnett's lancehead, and Barnett's pit viper. In Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

 it is referred to as cascabel, false cascabel, macanch, sancarranca and zancarranca.

Geographic range

Found along the Pacific coast of northern Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

. It occurs at low elevations in arid, tropical scrub. The type locality given is "from the mouths of Quebradas Honda and Perines, between Lobitos and Talara, northern Peru.