Porthidium porrasi LAMAR, 2003

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Higher Taxa	Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	G: Weißschwanz-Stülpnasenotter
Synonym	Porthidium porrasi LAMAR 2003 Porthidium porrasi — WALLACH et al. 2014: 577
Distribution	SW Costa Rica Type locality: Drake Bay, Península de Osa, Puntarenas Province, Costa Rica
Reproduction	ovovivparous
Types	Holotype: 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.
Diagnosis	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.
Comment	Venomous! Habitat: terrestrial Behavior: nocturnal Max. total length: 50 cm
Etymology	The 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 De Plecker, R. and Dwyer, Q. 2020. Porthidium porrasi (white-tailed hognosed pitviper). Maximum elevation. Herpetological Review 51: 154 - 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 Mata-Silva, V, DeSantis DL, García-Padilla E, Johnson JD, Wilson LD. 2019. The endemic herpetofauna of Central America: a casualty of anthropocentrism. Amphibian & Reptile Conservation 13 (1) [General Section]: 1–64 (e168) - get paper here PLECKER, ROEL DE & QUETZAL DWYER 2021. First Breeding Record of the White-tailed Hognosed Pitviper (Porthidium porrasi) in Captivity. Herpetological Review 52 (2): 329–332 Porras, L.W. & Solórzano, A. 2006. Costa Rica’s venomous snakes. Reptilia (GB) (48): 11-17 - get paper here Porras, L.W. & Solórzano, A. 2006. Die Schlangen Costa Ricas. Reptilia (Münster) 11 (61): 20-27 - get paper here Santos-Barrera, Georgina; Jesus Pacheco, Fernando Mendoza-Quijano, Federico Bolaños,<br>Gerardo Cháves , Gretchen C. Daily, Paul R. Ehrlich & Gerardo Ceballos 2008. Diversity, natural history and conservation of amphibians and reptiles from the San Vito Region, southwestern Costa Rica. Rev. Biol. Trop. 56 (2): 755-778 - 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.
External links	IUCN Red List National Center for Biotechnology Information https://www.facebook.com/groups/stshc/posts/318910393666899 Google images

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