Simplifying the complex (Amphibia: Anura: Centrolenidae): a taxonomic review and description of two new species.

Centrolenidae is a Neotropical family widely distributed in Central and South America, with its species richness concentrated in the tropical Andes. Several taxonomic problems have been identified within this family, mostly related to species with broad geographic distributions. In this study, we assessed and redefined the species boundaries of the species complex, and formally described two new species from the Andes of Ecuador. These new taxa are recognized by a combination of morphometric, osteological, acoustic, and genetic data. Following IUCN criteria, we propose that the two new species should to be considered as Endangered (EN), mainly because of their small distributions and habitat loss. The complex provides insights into the biogeography of closely related Andean species. As in other glassfrogs, speciation in seems to be mediated by the linearity of the Andes, where gene flow can be restricted by topography and, also, local extinctions.