There are several closely related species in this group. All are very dangerous to man.
Description: Variable coloration, from gray to olive, brown, or reddish, with dark triangles edged with light scales. Triangles are narrow at the top and wide at the bottom.
Characteristics: This highly dangerous snake is responsible for a high mortality rate. It has an irritable disposition, ready to strike with little provocation. The female fer-de-lance is highly prolific, producing up to 60 young, all with a dangerous bite. The venom of this species is hemotoxic, painful, and hemorrhagic (causing profuse internal bleeding). The venom causes massive tissue destruction.
Habitat: Found on cultivated land and farms, often entering houses in search of rodents.
Length: Average 1.4 meters (5 feet), maximum 2.4 meters (8 feet).
Distribution: Southern Mexico, throughout Central and South America (Figure E-13).
Figure E-13. Fer-de-lance Habitat