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Adult specimens may exceed 100 cm, but are usually less than 80 cm in length. These are relatively slender snakes and have a prehensile tail.
The color pattern consists of an emerald green to bluish green ground color, overlaid with a series of yellow alternating paravertebral vertical bars. Some of the scales adjacent to the yellow in this pattern may be blue or black-tipped. The belly is a uniform yellowing-green, bordered on either side by a pale yellow stripe running along the lower portion of the paraventral scales and the extreme lateral part of the ventral scales. The head is uniformly green on top and a blue or blue-gray postocular stripe may be present. If a postocular stripe is present, it is weakly defined, especially in large adults. The iris is yellow.
Juvenile specimens are usually brown with dark brown markings on the head, bronze irises, postocular stripes, paravertebral makings that are edged with yellow, and a tail tip that is yellow or chartreuse. Captive juveniles retain this color pattern for about six months, after which the ground color starts to become a dull lime green and the yellow edges of the paravertebral vertical bars more prominent. It is thought that the shift to adult coloration takes about 18-24 months to complete.
Like many green snakes, captive adults tend to become blue over time, although blue specimens are sometimes found in the wild.
Found in the mountains of Costa Rica and western Panama, including the Cordillera de Tilarán, the Cordillera Central and the Cordillera de Talamanca to the provinces of Chiriquí and Veraguas. Occurs at 850-980 m altitude. The type locality is listed as "Costa Rica vom Vulcan Barbo [Volcán Barba] ... und .. Veragua" [Panama].
Occurs in lower montane forest, lower montane wet forest, and lower montane rainforest. Although this species is able to survive is some areas that have been altered for agricultural purposes, such as coffee plantations, it seems they are slowly disappearing from these places. On the other hand, it is common in some protected areas, where populations appear to be doing quite well.
This is an arboreal species that spends its time in the thick foliage of forest trees and shrubbery. It is often found at the base of palm fronds. These snakes prefer to remain coiled and still, relying on their camouflage to avoid detection, rather than defending themselves aggressively. However, they will strike quickly if touched.
The prehensile tail is not only used as an anchor when resting, but also when it strikes out to grasp its prey, which consists of small birds, rodents, lizards and frogs.
- List of crotaline species and subspecies
- Crotalinae by common name
- Crotalinae by taxonomic synonyms
- ^ a b c McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
- ^ a b c d e f g Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. ISBN 0-8014-4141-2.
- ^ a b Bothriechis lateralis at Herps of Panama. Accessed 27 November 2006.
- ^ Bothriechis lateralis (TSN 634841). Integrated Taxonomic Information System. Retrieved on 27 November 2006.
- ^ a b c d Mehrtens JM. 1987. Living Snakes of the World in Color. New York: Sterling Publishers. 480 pp. ISBN 0-8069-6460-X.
- ^ a b Green Palm Viper (Bothriechis lateralis) at Cloud Forest Alive. Accessed 27 November 2006.
- ^ Bothriechis lateralis at Munich AntiVenom INdex. Accessed 27 November 2006.
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