The genus Oxybelis (New World vine snakes) includes four species collectively found over a broad range of ecological zones in the Americas (subtropical and tropical, lowland and premontane). The geographic distribution extends from southern Arizona (U.S.A.) and Coahuila (Mexico) south to northern Peru on the Pacific slope and to Bolivia, northeastern Argentina, and southern Brazil east of the Andes, including Trinidad and Tobago.
Oxybelis are slender, elongate, and narrow-headed arboreal snakes. In Central America, they are very distinctive. Two Amazonian species, Xenoxybelis argenteus and X. boulengeri, were formerly included in this genus. A detailed physical description and more information on several Oxybelis species can be found in Savage (2002).
Vision in Oxybelis is binocular and the eyes are directed forward rather than laterally as in most snakes. From arboreal attack sites, these diurnal snakes feed on a variety of primarily terrestrial prey, including lizards and amphibians. They are reported to sleep coiled individually in vegetation. (Montgomery et al. 2011 and references therein)
Humans bitten by Oxybelis snakes have experienced local effects from the venom delivered by the grooved rear fangs. These snakes should be handled with caution! (Gutiérrez and Sasa 2002)
- Gutiérrez, J.M. and M. Sasa. 2002. Bites and envenomations by colubrid snakes in Mexico and Central America. Journal of Toxicology--Toxin Reviews. 21 (1&2): 105-115.
- Henderson, R. W. 1982. Trophic relationships and foraging strategies of some New World tree snakes (Leptophis, Oxybelis, Uromacer). Amphibia-Reptilia 3: 71–80.
- Henderson, R. W., and M. H. Binder. 1980. The ecology and behavior of vine snakes (Ahaetulla, Oxybelis, Thelotornis,, Uramacer): a review. Milwaukee Public Museum Contributions in Biology and Geology 37: 1–38.
- Montgomery, C.E., K.R. Lips, and J.M. Ray. 2011. Ontogenetic shift in height of sleeping perches of Cope's Vine Snake, Oxybelis brevirostris. The Southwestern Naturalist 56(3):358-36.
- Ray, J. M. 2009. Ecology of a Neotropical arboreal snake assemblage and diet and defensive tactics of New World mollusk-eating snakes. Ph.D. dissertation, Old Dominion University, Norfolk, Virginia.
- Savage, J.M. 2002. The Amphibians and Reptiles of Costa Rica. University of Chicago Press, Chicago.
Molecular Biology and Genetics
Statistics of barcoding coverage
Specimens with Sequences:44
Specimens with Barcodes:23
Species With Barcodes:3
Oxybelis is a genus of colubrid snakes, endemic to the Americas, which are commonly known as vine snakes. Though similar in appearance to the Asian species of vine snakes of the genus Ahaetulla, they are not related, and are an example of convergent evolution.
Geographic range 
Body slender and laterally compressed, tail long. Head elongated and distinct from neck. Pupil of eye round.
Dorsal scales smooth or weakly keeled, with apical pits, and arranged in 15 or 17 rows at midbody. Ventrals rounded at sides, subcaudals paired (divided).
Maxillary teeth 20-25, subequal, except for the 3-5 most posterior, which are slightly enlarged and grooved on the outer surface. Anterior mandibular teeth strongly enlarged.
There are four widely recognized species in the genus Oxybelis!
- Oxybelis aeneus (Wagler, 1824) - Mexican vine snake
- Oxybelis brevirostris (Cope, 1861) - Cope's vine snake
- Oxybelis fulgidus (Daudin, 1803) - green vine snake
- Oxybelis wilsoni Villa & McCranie, 1995 - Roatan vine snake
- Wright, A.H., and A.A. Wright. 1957. Handbook of Snakes of the United States and Canada. Comstock. Ithaca and London. 1,105 pp. (in 2 volumes) (Genus Oxybelis, p. 565.)
- Boulenger, G.A. 1896. Catalogue of the Snakes in the British Museum (Natural History). Volume III., Containing the Colubridæ (Opisthoglyphæ and Proteroglyphæ),... Trustees of the British Museum (Natural History). (Taylor and Francis, Printers.) London. xiv + 727 pp. + Plates I.- XXV. (Genus Oxybelis, pp. 189-190, Figure 15.)
Further reading 
- Wagler, J. 1830. Natürliches System der AMPHIBIEN mit vorangehender Classification der SÄUGTHIERE und VÖGEL. Ein Beitrag zur vergleichenden Zoologie. J.G. Cotta. Munich, Stuttgart and Tübingen. vi + 354 pp + 1 Plate. (Genus Oxybelis, p. 183.)
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