Pristimantis chiastonotus is a species of frog in the family Strabomantidae. It is found in Brazil, French Guiana, Suriname, and possibly Guyana. Its natural habitats are tropical moist lowland forests, rural gardens, and heavily degraded former forest. It is threatened by habitat loss. References chiastonotus Amphibians of Brazil Amphibians of French Guiana Amphibians of Suriname Amphibians described in 1977 Taxonomy articles created by Polbot