Pristimantis sternothylax is a species of frog in the family Strabomantidae. It is found on the Cordillera de Huancabamba, Cordillera Occidental, Cerro Aypate, and Cerro Toronche in northern Peru as well as in the Loja Province in southern Ecuador. Its natural habitats are humid montane forest. References sternothylax Amphibians of Ecuador Amphibians of Peru Amphibians described in 1993 Taxonomy articles created by Polbot