Abstract
We studied the taxonomic status of glassfrogs collected in Departamento Huánuco, central Peru, which in the field were tentatively allocated to Chimerella, one of the twelve genera currently recognized in the family Centrolenidae. Detailed analyses of their morphology, bioacoustics, and molecular genetics supported their generic allocation and provided evidence for them representing a divergent and unnamed evolutionary lineage within Chimerella. We herein describe this lineage as a new species, being mainly distinguished from the two other known congeners, C. corleone and C. mariaelenae, by details of colouration in life and preservative, substantial differences in advertisement call, and differentiation in mitochondrial markers (12S rRNA, 16S rRNA, cytochrome b) and a nuclear-encoded marker (Rag-1). The new species is the southernmost distributed species in the genus and was found in a swampy habitat at the bank of the Río Patay Rondos, a tributary of the Río Monzon, in rainforest at the Andean-Amazon foothills at 798 m above sea level. Aspects of species delimitation within Chimerella and related future research are briefly addressed and discussed.
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