Urutu Lancehead

Bothrops alternatus, known by the common names crossed pit viper, yarará grande, and urutu, among others, is a highly venomous pit viper species found in South America (Brazil, Paraguay, Uruguay and Argentina). Within its range, it is an important cause of a snakebite. The specific name, alternatus, which is Latin for "alternating", is apparently a reference to the staggered markings along its body. No subspecies are currently recognized.

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Is it venomous or poisonous?

Considered venomous. Public sources list it as such; we have not verified this individually. The note covers its whole genus. Lanceheads (Bothrops spp.), including the fer-de-lance (B. lanceolatus) and the terciopelo (B. asper) Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

• Bothrops neuwiedi — considered venomous
• Bothrops diporus — considered venomous
• Bothrops pubescens — considered venomous
• Bitis arietans — venomous
• Daboia siamensis — venomous

Classification

Kingdom

Animalia

Phylum

Chordata

Class

Reptilia

Order

Squamata

Family

Viperidae

Genus

Bothrops

Species

Bothrops alternatus

More species