Porthidium nasutum is a pit viper species found in southern Mexico, Central America and northern South America. No subspecies are currently recognized.

Description

Adults are usually less than 40 cm in total length, and rarely more than 60 cm. Females are considerably larger than males. Moderately stout and terrestrial.

Geographic range

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. It is found in mesic lowland broadleaf or rainforest from sea level to elevation of about 900 m. The type locality given is "Pansos [Panzós], sur les bords du Polochic [Alta Verapaz] (Guatémala)."

Conservation status

This species 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.