Pristimantis antisuyu sp. n. and Pristimantis erythroinguinis sp. n., two new species of terrestrial-breeding frogs (Anura, Strabomantidae) from the eastern slopes of the Andes in Manu National Park, Peru

Researchers have identified two new species of terrestrial-breeding frogs, Pristimantis antisuyu and Pristimantis erythroinguinis, from the Kosñipata valley on the eastern slopes of the Andes near Manu National Park in Peru. These species are closely related but inhabit distinct elevation ranges (1485-1823 m a.s.l. for P. antisuyu and 930-1255 m a.s.l. for P. erythroinguinis). Both species share unique morphological traits, such as an iris with a cruciform pattern, no tympanum, and red or yellow coloration on the groin. Phylogenetic analysis using mitochondrial DNA (16S rRNA and COI) revealed that Pristimantis flavobracatus is synonymous with P. cruciocularis due to shared genetic sequences and morphological similarities. The new species can be distinguished from P. cruciocularis by differences in groin coloration, body size, tibia length, and metatarsal tubercle proportions.

CATENAZZI, A., & LEHR, E. (2018). Pristimantis antisuyu sp. n. and Pristimantis erythroinguinis sp. n., two new species of terrestrial-breeding frogs (Anura, Strabomantidae) from the eastern slopes of the Andes in Manu National Park, Peru. Zootaxa, 4394(2). https://doi.org/10.11646/zootaxa.4394.2.2