tropical moist montane forests at elevations above 180 m. It has been documented in shrubs, palms, herbaceous plants, bromeliads, tree holes, and under rocks, trunks, roots, and leaf litter. Evolutionary history and conservation The low-elevation Caguas Basin in eastern Puerto Rico is a long-term barrier to gene flow between populations of E. portoricensis in the Luquillo and Cayey Mountains, with population divergence beginning more than 75 ka. Stable population sizes over time indicate a lack of demographic response to climatic changes during the last glacial period. The results highlight the importance of topographic complexity in promoting within-island allopatric speciation in the Greater Antilles, and indicate long-term persistence and lineage diversification despite Quaternary climatic oscillations. The species has undergone considerable declines throughout its range and is listed as endangered. Captive breeding programs are being used to help conserve E. portoricensis. See also Fauna of Puerto Rico List of amphibians and reptiles of Puerto Rico References portoricensis Amphibians of Puerto Rico Endemic fauna of Puerto Rico Amphibians described in 1927 Taxa named by Karl Patterson Schmidt Taxonomy articles created by Polbot Cayey, Puerto Rico Greater Antilles