From the IUCN Red List Species Account:

Range Description

This species is present throughout much of the Amazonian lowlands of Peru, Ecuador, southern Colombia and western Brazil (Acre). It has been recorded from elevations of 200-950m asl.

Habitat and Ecology

This species can be found in primary tropical lowland terra firme forest. The species is usually found in the litter of tropical rainforests, occasionally in open areas. It breeds by direct development and egg deposition occurs in leaf-litter. It is not present in modified habitats.

Population

It is a rarely found species.

Population Trend

Stable

Major Threats

Presumably there are no major threats; it is a generally widespread species with large areas of suitable habitat remaining. There is some localized habitat loss to general human activities such as collection of wood, logging, agriculture (crops, livestock etc.), oil exploration and colonization.

Conservation Actions

In Ecuador, its geographic range overlaps with Reserva Biológica Limoncocha, Parque Nacional Yasuní, and Parque Nacional Sumaco Napo-Galeras. It is present in Guepi Reserve Zone, Peru. It occurs in a number of protected areas in Brazil.

Citation

Lily Rodríguez, Jorge Luis Martinez, Claudia Azevedo-Ramos, Luis A. Coloma, Santiago Ron 2004. Strabomantis sulcatus. In: IUCN 2012