This Ecuadorian species is known from the type locality, in the flood plain of the Napo River, on the eastern face of the Ecuadorian Andes, at 450m asl, as well as from four other recently documented localities: Serena Village, on the south side of the upper Napo River, at 560m asl in Napo Province; 5km south of Dayuma Village at 267m asl, and the south side of the Yasuní River, at 220m asl, both in Orellana Province; as well as Morona Santiago Province (the precise locality has not been given).
Habitat and Ecology
The type locality is situated in flood-plain habitat, which is continually subjected to flooding and agricultural activities. Specimens have been located at night on vegetation 0.5-2m above the ground. The type specimens were collected in secondary forest. The habitat at other localities includes agricultural land surrounded by secondary forest, and coffee plantations surrounded by primary forest. This species therefore appears to be tolerant of a degree of habitat modification.
The population status of this species is not known.
The major threats to its habitat are agricultural development (involving both the cultivation of crops and the rearing of livestock), as well as logging and road construction. The primary and secondary forest at the type locality is fragmented by farms, and the possible future construction of a road through the protected area in which it occurs is cause for concern.
The type locality is a small private ecological reserve (the Estación Biológica y Reserva Jatun Sacha).
Because of its close resemblance with the abundant and widespread Pristimantis ockendeni, it is probable that specimens of this species are misidentified in museum collections.
Ana Almendáriz, Diego Cisneros-Heredia, Karl-Heinz Jungfer, Luis A. Coloma, Santiago Ron 2004. Pristimantis librarius. In: IUCN 2014