Fer-de-lance
Bothrops asper
A large, fast-moving pit viper found across much of Central America.
- Adult length
- 1.2-2 m (4-6.5 ft)
- Range
- Central America and northern South America
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Overview
The fer-de-lance, also widely known by its Spanish name terciopelo, is a pit viper of the Americas, notable for its abundance, adaptability, and tendency to inhabit areas close to human settlement.
How to identify it
- Grayish-brown, tan, or olive body with dark, pale-edged triangular or diamond-shaped blotches along the sides
- Triangular head distinct from a narrower neck, with vertical pupils
- Light-colored stripe often running from eye to jaw
- Rough, keeled scales
- Distinguished from other lanceheads by size, pattern detail, and geographic range
Habitat & range
Highly adaptable, found in tropical lowland forests, agricultural land, plantations, and forest edges from southern Mexico through Central America into northwestern South America. Often found near human habitation due to rodent prey abundance.
Behavior, diet & reproduction
Primarily nocturnal, though may be active during the day in shaded, humid areas. An active hunter that also ambushes prey, feeding on rodents, birds, and amphibians. Live-bearing, with females producing large litters of young.
Frequently asked questions
What is another name for the fer-de-lance?
It is also widely known as the terciopelo.
Where does the fer-de-lance live?
From southern Mexico through Central America and into northwestern South America.
How can you identify a fer-de-lance?
Look for a tan to olive body with dark triangular blotches and a triangular head with vertical pupils.
Fer-de-lance guides
In-depth guides for identifying and understanding Fer-de-lance.
Fer-de-lance identified by the community
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