Abstract
We provide new distribution records and discuss the taxonomy of three species of Glassfrogs from the Guiana Shield: Centrolene gorzulai, Cochranella helenae, and Hyalinobatrachium taylori. These three species were collected in Kaieteur National Park in west-central Guyana. Taxonomic changes were based on morphological, bioacoustic and genetic (a fragment of the mitochondrial ribosomal gene 16S) comparisons. We consider Centrolene papillahallicum to be a junior synonym of C. gorzulai. We assign the Venezuelan population of Cochranella oyampiensis to Co. helenae and describe the phenotypic variation of this taxon. We refine the description of Cochranella oyampiensis and transfer it to the Co. spinosa species group. We propose the new name Cochranella helenae Group for those species of Cochranella assigned to the former Co. oyampiensis Group. We report the first record of Cochranella midas for French Guiana, and the first record of Hyalinobatrachium nouraguense, new emendation, for Suriname.References
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