Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
A new species of hognose pitviper, genus <i>Porthidium</i>, from the southwestern Pacific of Costa Rica (Serpentes: Viperidae)
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Keywords

porthidium porrasi
porthidium nasutum
osa peninsula
Costa Rica
Central America

How to Cite

Lamar, W. W., & Sasa, M. (2003). A new species of hognose pitviper, genus <i>Porthidium</i>, from the southwestern Pacific of Costa Rica (Serpentes: Viperidae). Revista De Biología Tropical, 51(3-4), 797–804. Retrieved from https://revistas.ucr.ac.cr/index.php/rbt/article/view/16051

Abstract

A new species of terrestrial pitviper, Porthidium porrasi, is described from mesophytic forests of the Península de Osa and surrounding area of the Pacific versant of southwestern Costa Rica. It is most similar to P. nasutum and is characterized by a pattern of bands, persistence of the juvenile tail color in adults, and a high number of dorsal scales. Analysis of mtDNA sequences confirms its distinction from P. nasutum. The existence of this species reinforces the notion of elevated herpetofaunal endemism in southwestern Costa Rica.
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