It is a member of the group of snakes known as pit vipers. (1991). Mainly feeds on rodents, frogs, other snakes, snake eggs. Although both males and females display this behavior, only males have bright coloured tail tips.

These snakes don’t prefer to live in the dry periods of strong seasons.

Reproduction is highly seasonal and in Costa Rica, reproductive cycles are tightly related to rainfall patterns. The ventral side is yellow, cream, or a whitish gray, with dark blotches that are more frequent closer to the posterior end.

On average, these snakes inject 105 mg of venom in one bite while the fatal dose for a human is 50 mg. To prevent water loss where they occur in drier regions, these snakes possess more scales than usual. Herpetologist Douglas March died after being bitten by this species. People also refer to this species as the “common lancehead.” People frequently encounter this species because it hunts for rats and mice in farms and pastures. [1] [20], This is mostly a lowland species that, in Mexico and Central America, occurs from about sea level to 1,200 to 1,300 meters (3,900 to 4,300 ft) altitude.

After mating, the female retains the young inside her body, moving in and out of the sun to keep the embryos at a constant temperature.

[2][12][13] Several herpetologist have preferred and argued to restrict the name fer-de-lance to the Martinique lancehead (Bothrops lanceolatus) from the Caribbean Island of Martinique but, popular usage has rarely recognized any distinction.

[5], The generic name, Bothrops, comes from the Greek words bothros and ops, which mean "pit" and "face" (or "eye"), respectively. [2], Due to the casual and informal application of the name "Fer-de-lance" being applied to any number of species of Latin America pit vipers in the genus Bothrops, there is much confusion and misunderstanding, particularly in popular literature, as to proper nomenclature. The underside is most often pale yellow.

Although usually absent, it may have occipital blotches or streaks that range from indistinct to distinct.

Southwestern Naturalist 62(1): 77-84.

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Fer-de-Lance Pictures Gallery The Fer-de-lance is a highly venomous pit viper species found from southern Mexico to northern South America. Bothrops atrox Bothrops atrox. Snakes: The Evolution of Mystery in Nature.

Some populations may mate in March, and give birth in September-November.

These 'pits', coupled with its tongue to 'taste' the air, allow the fer-de-lance to strike with great accuracy even in total darkness. Common names: fer-de-lance, terciopelo,.

Bothrops asper (common names Terciopelo [English], Cuatro Narices [Spanish], and often called the fer-de-lance among many other colloquial names, but see discussion under common names below ) is a venomous pit viper species, ranging in distribution from southern Mexico to northern South America.

Juveniles are often semiarboreal, and even adults can sometimes be seen in bushes and low trees. These snakes can be distinguished by their broad, flattened heads which are set apart from the rest of their bodies. It is not known whether this species exhibits annual or biannual reproduction.[22].

The name "fer-de-lance" means "spearhead" in French. Habitat: Forest areas, along stream edges and ditches. In this post, you’ll learn 23 Fer de Lance facts, including diet, size, habitat, unique features and more. Textured and ribbed solid metal handle and guard. The Fer-de-lance is a highly venomous pit viper species found from southern Mexico to northern South America. Breeding season: Throughout the year. Nylon sheath.

Society for the Study of Amphibians and Reptiles.

In this post, you’ll learn 23 Fer de Lance facts, including diet, size, habitat, unique features and more.

Because of its proximity to human habitations and its defensive temperament, it is more dangerous to people than many other snakes. It is the most dangerous snake of Central and South America, and causes more human deaths than any other American reptile. This is true in the premontane forest in Costa Rica, the cloud forest of Guatemala and Mexico, or the lower montane wet forest in the Caribbean Region of Colombia and Ecuador.

This species lives primarily in Central and South America. xiii, 351 pp. Daily Life Ventrolaterally, B. asper has interchanging gray scales which are more pale towards the medial line. They feed themselves on frogs and lizards, and actively climb trees, but lose this habit in adulthood. An isolated population occurs in southeastern Chiapas (Mexico) and southwestern Guatemala. Adult specimens, when cornered and fully alert, are dangerous. © 2020 Young People's Trust For the Environment. Bothrops asper is a highly venomous pit viper species the range of which extends from southern Mexico to northern South America. Habitat: Found on cultivated land and farms, often entering houses in search of rodents. Bothrops species can be distinguished by their broad, flattened heads which are set apart from the rest of their bodies. The fer-de-lance's name means 'spearhead' in French. Because of its proximity to human habitations and its defensive temperament, it is more dangerous to people than many other snakes. Please donate £1 to help YPTE to continue its work of inspiring young people to look after our world.

[2][18] These are among the most sexually dimorphic of all snakes. Krieger Publishing Co. Malabar, Florida. [20], The timing of the reproductive cycle and the litter size of this species vary according to location: in some parts of Costa Rica, for example, it is more prolific than in others.

They are found in a wide range of lowland habitats, often near human habitations.

400 pp. An isolated population occurs in southeastern Chiapas (Mexico) and southwestern Guatemala.

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