Boa constrictor is an exclusively New World species which has the largest distribution of all neotropical boas. Boa constrictors range from northern Mexico south through Central and South America. In South America the range splits along the Andes mountains. To the east of the Andes, B. constrictor is found as far south as northern Argentina. On the west side of the mountains, the range extends into Peru. Boa constrictors are also found on numerous islands off the Pacific coast and in the Caribbean. Islands included in the boa constrictor range are: the Lesser Antilles, Trinidad, Tobago, Dominica, and St. Lucia. Some islands off the coast of Belize and Honduras are also inhabited by this species.
Biogeographic Regions: nearctic (Native ); neotropical (Native )
- Chiaraviglio, M., M. Bertona, M. Sironi, S. Lucino. 2003. Intrapopulation variation in life history traits of Boa constrictor occidentalis in Argentina. Amphibia-Reptilia, 24/1: 65-74. Accessed November 07, 2008 at http://apps.isiknowledge.com.ezproxy1.ats.msu.edu/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=1FBABe92cheDGF3aPf6&page=1&doc=2.
- Mattison, C. 2007. The New Encylcopedia of Snakes. Princeton, New Jersey: Princeton University Press.
- O'Shea, M. 2007. Boas and Pythons of the World. Princeton, New Jersey: Princeton University Press.
- Stafford, P. 1986. Pythons and Boas. Neptune City, New Jersey: T.F.H. Publications, Inc. Ltd.