Common names: hognosed pit viper, hognosed pit viper, rainforest hognosed pit viper,Campbell JA, Lamar WW (2004). The Venomous Reptiles of the Western Hemisphere. Ithaca and London: Comstock Publishing Associates. 870 pp. 1,500 plates. (in two volumes). . horned hog-nosed viper.Brown JH (1973). Toxicology and Pharmacology of Venoms from Poisonous Snakes. Springfield, Illinois: Charles C. Thomas. 184 pp. LCCCN 73-229. .
Porthidium nasutum is a pit viper species native to southern Mexico, Central America and northern South America. No subspecies are recognized as being valid.
Description
Adults of Porthidium nasutum are usually less than in total length (tail included), and rarely more than . Females are considerably larger than males. Both sexes are moderately stout.
Geographic distribution Porthidium nasutum is found in southern Mexico southward through Central America to western Colombia and northwestern Ecuador in South America. Inhabits the Atlantic lowlands from Mexico (Tabasco and Chiapas) through Belize, Guatemala, Honduras, Nicaragua and Costa Rica to eastern Panama and northwestern Colombia. In the Pacific lowlands, it occurs in southwestern Costa Rica, central and eastern Panama, continuing on to northwestern Ecuador. The type locality given is "Pansos [Panzós], sur les bords du Polochic [Alta Verapaz] (Guatémala)".
Habitat The preferred natural habitat of Porthidium nasutum is mesic lowland broadleaf or rainforest from sea level to elevations of about .
Behavior Porthidium nasutum is terrestrial.
Reproduction Porthidium nasutum is ovoviviparous.
Conservation status The species Porthidium nasutum is classified as Least Concern (LC) on the IUCN Red List of Threatened Species. It is a widespread and moderately common species that is not facing major threats.
References
Further reading Bocourt, M.F. (1868). "Descriptions de quelques Crotaliens nouveaux appartenant au genre Bothrops, recueillis dans le Guatémala". Annales des Sciences Naturelles, Cinquième Série [Series 5] 10: 201–202. (Bothrops nasutus, new species, p. 202). (in French).
External links Porthidium nasutum at Honduras Silvestre . Accessed 12 February 2008.