Porthidium volcanicumPorthidium volcanicum, the Ujarran hognosed pit viper, is a pit viper species endemic to Costa Rica. No subspecies are currently recognized.DescriptionAdults of P. volcanicum are moderately stout, with females growing to in total length. The only male ever collected was long.Geographic rangePorthidium volcanicum is known only from the type locality, which is given as "Ujarrás de Buenos Aires ", Volcán de Buenos Aires and Valle del General in Puntarenas Province, Costa Rica.HabitatPorthidium volcanicum occurs in tropical moist forest. The region receives of rainfall annually and has a dry season January–April.