Ophryacus sphenophrys (SMITH, 1960)

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Higher Taxa	Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Broad-horned Pitviper
Synonym	Bothrops sphenophrys SMITH 1960: 267 Ophryacus sphenophrys — GRÜNWALD et al. 2015
Distribution	Mexico (Oaxaca) Type locality: Mexico: El Soledad, Oaxaca.
Reproduction
Types	Holotype: INHS (= UIMNH) 6262, W.L. Burger; July 22, 1949, fide SMITH 1964)
Diagnosis	Diagnosis: Supraocular protuberant, wedgeshaped, hornlike, base almost twice as long as projecting part; subcaudals divided, 57; ventrals 171; two rows of scales between orbit and labials; ten scales across top of head between supraocular horns; scales bordering pit ventrally in contact with labials; pattern of two rows of dark paired rectangular spots on each side of body. Additional details (4911 characters) are available for collaborators and contributors. Please contact us for details.
Comment	Venomous! Habitat: forests
Etymology	Not given by Smith 1960 but apparently after the Greek “sphenos” = cuneiform, wedge, referring to the shape of its supraocular, and Greek “ophrys” = eye brow, forehead (see also genus name!).
References	Grünwald, Christoph I.; Jason M. Jones, Hector Franz-Chávez, and Iván T. Ahumada-Carrillo 2015. A new species of Ophryacus (Serpentes: Viperidae: Crotalinae) from eastern Mexico, with commentson the taxonomy of related pitvipers. Mesoamerican Herpetology 2 (4): 388 - get paper here Lemos-Espinal, J. A., & Smith, G. R. 2025. The diversity and conservation status of amphibians and reptiles from the Mexican biogeographic province of Sierra Madre del Sur. Nature Conservation, 58: 101-127 - get paper here OLIVEIRA-DALLAND, LUIS G.; LAURA R.V. ALENCAR, LEANDRO R. TAMBOSI, PAOLA A. CARRASCO, RHETT M. RAUTSAW, JESUS SIGALA-RODRIGUEZ, GUSTAVO SCROCCHI & MARCIO MARTINS. 2022. Conservation gaps for Neotropical vipers: Mismatches between protected areas, species richness and evolutionary distinctiveness. Biological Conservation 275(109750). - get paper here Smith, H. M. 1960. New and noteworthy reptiles from Oaxaca, Mexico. Transactions of the Kansas Academy of Science 62: 265–271
External links	National Center for Biotechnology Information https://www.facebook.com/photo.php?fbid=10155826912006427&set=gm… Google images

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