Geographic call variation in the Granular Glassfrog, Cochranella granulosa (Taylor, 1949), and a new distribution record in Colombia

We describe the advertisement call of a newly discovered Colombian population of Cochranella granulosa and compare it with available acoustic data closest to the type locality. We conducted a series of principal component analyses to explore the variation in the spectral and temporal features of the call. Despite the structural similarities, we found differences between the two populations of C. granulosa in most spectral variables and one temporal variable. In addition, we narrow the 950 km gap between the Panamanian and Ecuadorian records of C. granulosa and comment on previous records.