Pristimantis nyctophylax, also known as Tandapi robber frog or watchful rainfrog, is a species of frog in the family Strabomantidae. It is endemic to Ecuador where it is known from the western flank of the Andes in the Cotopaxi and Pichincha Provinces. Its natural habitat is tropical cloud forests. It is threatened by habitat loss. References Amphibians described in 1976 nyctophylax Endemic fauna of Ecuador Amphibians of Ecuador Amphibians of the Andes Taxonomy articles created by Polbot