Template:Lamar & Sasa, 2003

• Lamar, W.W. & Sasa, M. 2003. A new species of hognose pitviper, genus Porthidium, from the southwestern Pacific of Costa Rica (Serpentes: Viperidae). Revista de Biología Tropical 51(3-4): 797–804. Full article  
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Nomenclatural acts

• Date of publication: September 2003

New names (1)

• Porthidium porrasi [p. 799]