Hyloxalus pumilus is a species of frogs in the family Dendrobatidae. It is endemic to southern Ecuador where it is only known from its type locality in the Azuay Province. Its natural habitats are cloud forests. It is threatened by habitat loss and degradation. References pumilus Amphibians of the Andes Amphibians of Ecuador Endemic fauna of Ecuador Amphibians described in 1991 Taxonomy articles created by Polbot