Porthidium yucatanicum (SMITH, 1941)

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Higher Taxa	Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Yucatán Hognose Viper S: Chac-can
Synonym	Trimeresurus yucatanicus SMITH 1941: 62 Bothrops yucatanicus SMITH 1941 Bothrops yucatanica — VILLA et al. 1988 Porthidium yucatanicum — LINER 1994 Porthidium yucatannicus — WELCH 1994: 101 Porthidium yucatanicum — MCDIARMID, CAMPBELL & TOURÉ 1999: 324 Porthidium yucatanicum — LEE 2000: 372 Porthidium yucatanicum — WALLACH et al. 2014: 578
Distribution	Mexico (northern half of the Yucatan peninsula, Campeche, Quintana Roo), Belize Type locality: "Chichen Itza, Yucatan" [Mexico].
Reproduction	ovovivparous
Types	Holotype: USNM 46571, Collected by Nelson & Goldman, February 6, 1901. Paratypes: (n=2) FMNH 504 from Yucatan and 20621 from Chichen Itza, Yucatan.
Diagnosis	Diagnosis: “Snout turned up in front; rostral no more than one and one-half times as high as wide; scale rows 21 posteriorly; two lower preoculars subequal, both excluded from orbit; two large scutes on top of head bordering internasals and canthals, nearly meeting medially; loreal square; caudals 32 to 41 in females; bands on body single.” (Smith 1941)
Comment	Venomous! Habitat: terrestrial Distribution: see Gray 2022 for a map with localities.
Etymology	Named after the type locality.
References	Aguilar-López JL, Luría-Manzano R, Pineda E, Canseco-Márquez L 2021. Selva Zoque, Mexico: an important Mesoamerican tropical region for reptile species diversity and conservation. ZooKeys 1054: 127-153 - get paper here Calderon, R.; Cedeño-Vázquez, J.R. & Pozo, C. 2003. New distributional records for amphibians and reptiles from Campeche, Mexico. Herpetological Review 34 (3): 269-272 - get paper here Campbell, J.A. & Lamar, W.W. 1989. The Venomous Reptiles of Latin America. Comstock Publishing/Cornell University Press, Ithaca González-Sánchez, V. H., J. D. Johnson, E. García-Padilla, V. Mata-Silva, D. L. DeSantis and L. D. Wilson. 2017. The Herpetofauna of the Mexican Yucatan Peninsula: composition, distribution, and conservation status. Mesoamerican Herpetology 4(2): 264–380 - get paper here GRAY, RUSSELL J. 2022. Settling the score: notes on the 60-year literature debate of Porthidium yucatanicum (Smith, 1941) distribution. Herpetology Notes 15: 387–389. - get paper here Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp Lee, J. C. 2000. A field guide to the amphibians and reptiles of the Maya world. Cornell University Press, Ithaca, Lee, J.C. 1996. The amphibians and reptiles of the Yucatán Peninsula. Comstock, Cornell University Press, Ithaca, 500 pp. MCCRANIE, J.R. 2001. Benque Viejo and Porthidium yucatanicum (Squamata: Viperidae) in Belize. Carib. J. Sci. 37 (3-4): 284-285 McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 pp. Ortiz-Medina, J. A., Cabrera-Cen , D. I., Nahuat-Cervera, P. E. and Chable-Santos, J. B. 2020. New distributional records for the herpetofauna of Campeche and Yucatan, Mexico. Herpetological Review 51: 83-87. - get paper here ORTIZ-MEDINA, JAVIER A.; MARCOS S. MENESES-MILLÁN & J. ROGELIO CEDEÑO-VÁZQUEZ. 2022. PORTHIDIUM YUCATANICUM (Yucatán Hog nosed Pitviper). DIET. Herpetological Review 53 (1): 156–157. Smith, H.M. 1941. Notes on Mexican snakes of the genus Trimeresurus. Zoologica 26: 61-64. - get paper here Smith, Hobart M. 1944. Additions to the list of Mexican amphibians and reptiles in the Carnegie Museum. Annals of the Carnegie Museum 30: 87-92 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/416641493893788 Google images

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