This species is known only at the type locality, on the pacific slope of the Cordillera Occidental, in the department of Nariño, Colombia, from 1,700-2,020m asl. It is presumed that this species may be found in the northern area of Ecuador, in the province of Carchi, but it has not yet been recorded there.
Habitat and Ecology
It is nocturnal, found on vegetation 1-2m above the ground, near streams in primary or good quality secondary forest. Breeding is by direct development.
It is a rare species.
There are no major threats to the habitat at the type locality at present, but there is pressure from local people to convert the current protected area for agricuture and cattle grazing. Some other species of Eleutherodactylus that are associated with streams have undergone dramatic declines and disappearances, possibly due to chytridiomycosis, so the status of this species should be monitored carefully.
The range of the species is wholly within La Planada Natural Reserve. Continued management and maintenance of this reserve is essential to ensure the long-term survival of this species, particularly given its reliance on good forest. Further survey work is needed to determine if it occurs outside the vicinity of the type locality.
Fernando Castro, Maria Isabel Herrera, John Lynch 2004. Pristimantis sulculus. In: IUCN 2014