Pristimantis ernesti
Pristimantis ernesti is a species of frog in the family Craugastoridae. It is endemic to the summit of Sumaco, a volcano in the Napo Province, Ecuador. Its common name is Ernest's robber frog. It is named after Dr. Ernst Williams, a friend and colleague of the scientist that described the species. It is a little studied species. Description. Males measure about in snout–vent length. Female size is unknown. The dorsum is coffee-coloured with dark gray markings, including a "W" mark on its upper back. Dorsal skin is glandular with prominent dorsolateral ridges. Habitat and conservation . Its natural habitat is grassland and bushland on the summit of Sumaco. Herpetological sources cite the altitude as being about , although other sources give maximum elevation of to this mountain. The volcano is in the Sumaco Napo-Galeras National Park. Nevertheless, being restricted to a single location, the population is vulnerable stochastic processes.