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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 Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
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. 
CommentVenomous!

Diagnosis: 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.

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
  • 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
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. Taylor and Francis, CRC Press, 1237 pp.
 
External links  
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http://reptile-database.reptarium.cz/species?genus=Porthidium&species=porrasi

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