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Porthidium porrasi LAMAR, 2003

IUCN Red List - Porthidium porrasi - Least Concern, LC

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Higher TaxaViperidae, Crotalinae, Colubroidea, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesG: Weißschwanz-Stülpnasenotter 
SynonymPorthidium porrasi LAMAR 2003
Porthidium porrasi — WALLACH et al. 2014: 577 
DistributionSW Costa Rica

Type locality: Drake Bay, Península de Osa, Puntarenas Province, Costa Rica  
Reproductionviviparous 
TypesHolotype: UTA R- 30829, male 276 mm SVL, collected on 10 July 1990 (Fig. 1 and 2). Paratypes. UCR 3310, adult female (261 mm SVL); UCR 3359, adult male (341 mm SVL); ICP 1131, adult female (338 mm SVL) from Rincón de Osa, Península de Osa, Puntarenas Province, Costa Rica. UCR 11479, juvenile male (173 mm SVL) from Golfito, Puntarenas Province, Costa Rica. 
DiagnosisDiagnosis: Porthidium porrasi may be distinguished from all congeners by a combination of the following features: snout extremely elevated, tail tip white in both juveniles and adults, ventrals fewer than 145, and usually 25-27 midbody dorsal scale rows.
 
CommentVenomous!

Habitat: terrestrial

Behavior: nocturnal

Max. total length: 50 cm 
EtymologyThe name porrasi is a patronym honoring Louis W. Porras, a Costa Rican born herpetologist who was the first to recognize the distinctiveness of the hognosed pitvipers inhabiting the Península de Osa. It is masculine in gender. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • 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 Biologia Tropical 51(3-4):797-804. - get paper here
  • Porras, L.W. & Solórzano, A. 2006. Die Schlangen Costa Ricas. Reptilia (Münster) 11 (61): 20-27 - get paper here
  • Porras, L.W. & Solórzano, A. 2006. Costa Rica’s venomous snakes. Reptilia (GB) (48): 11-17 - get paper here
  • Solorzano, A. 2004. Serpientes de Costa Rica - Snakes of Costa Rica. Editorial INBio, Costa Rica, 792 pp.
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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