This species occurs along the western base of the Andes in Ecuador. It has been recorded from five localities, at elevations between 220 and 830m asl.
Habitat and Ecology
It is an inhabitant of primary, perhaps undisturbed, forests, in humid climes (Lynch and Duellman 1997), and breeds by direct development.
It is a rare species.
Habitat degradation and loss is particularly severe within its range (primarily due to agriculture, involving both crops and livestock, as well as logging and road construction), and much of the remaining habitat is now severely fragmented.
Its geographic range overlaps the Reserva Ecológica Cotacachi-Cayapas and the Reserva Ecológica Los Illinizas. There is a need for improved protection of remaining primary forest within the range of this species.
Red List Status
Luis A. Coloma, Santiago Ron, Diego Cisneros-Heredia, Ana Almendáriz 2004. Pristimantis tenebrionis. In: IUCN 2014