Peru is well known for its diversity of frogs, yet there have been relatively few field studies of glassfrogs (Centrolenidae) in this country. Research to date indicates that glassfrog diversity is higher in the northern Andes. However, a new study by Twomey et al. (Zootaxa 2014) suggests that part of this trend may be due to sampling effort. The authors conducted fieldwork in Peru, and using an integrative approach to taxonomy they uncovered 4 new species from the family. Their results indicate that more exploration in the Peruvian Andes will likely uncover a higher diversity of glassfrogs than that currently recognized.