Agkistrodon howardgloydi is a species of venomous snake, a pit viper (Crotalinae), that is endemic to Central America. It is most commonly called castellana,Conant, R. 1984. A new subspecies of the pit viper Agkistrodon bilineatus (Reptilia: Viperidae) from Central America. Proceedings of the Biological Society of Washington. 97: 135-141.Gloyd, H. K., and R. Conant. 1990. Snakes of the Agkistrodon Complex: A Monographic Review. Society for the Study of Amphibians and Reptiles, Contributions in Herpetology, Number 6. Ithaca, New York, USA.Savage, J. M. 2002. The Amphibians and Reptiles of Costa Rica, A Herpetofauna between Two Continents, between Two Seas. University of Chicago Press, Chicago, Illinois. xx, 934 pp.but it has also been called the southern cantil,Porras, L.W., L. D. Wilson, G. W. Schuett, R. S. Reiserer. 2013. A taxonomic reevaluation and conservation assessment of the common cantil, Agkistrodon bilineatus (Squamata: Viperidae): a race against time. Amphibian & Reptile Conservation 7(1): 48–73. Gloyd's moccasin, and a number of other colloquial names. It is a rare species with a relatively small geographic distribution in the tropical dry forest on the Pacific coast of Honduras, Nicaragua, and extreme northwest Costa Rica.Porras, L.W., L. D. Wilson, G. W. Schuett, R. S. Reiserer. 2013. A taxonomic reevaluation and conservation assessment of the common cantil, Agkistrodon bilineatus (Squamata: Viperidae): a race against time. Amphibian & Reptile Conservation 7(1): 48–73. Agkistrodon howardgloydi is a stout, medium-sized snake with a maximum length of 96 cm. It is a viviparous species, with female giving birth in the rainy season from May to August.Campbell, J. A., and W. W. Lamar. 2004. The Venomous Reptiles of the Western Hemisphere (Vol. I & II). Comstock Publishing Associates, Cornell University Press, Ithaca, New York, USA. No clinical reports on envenomation had been published (as of 1999), but laboratory texts and analysis indicate the venom is highly toxic and similar to its close relative Agkistrodon bilineatus, and potentially lethal.Sloórzano, Alejandro.Marjorie Romero, José Maria Gutierrez, and Mahmood Sasa. 1999. Venom composition and diet of the cantil Agkistrodon bilineatus howardgloydi (Serpentes: Viperidae). Southwestern Naturalist, 44(4): 478-483.
No narrative description available for this taxon yet.
