A new rain frog of the genus Pristimantis (Anura, Craugastoridae) from the Cordillera del Cóndor, southeastern Ecuador

A new species of Pristimantis is described from the Cordillera del Cóndor, Zamora Chinchipe Province, southeastern Ecuador, based on morphological and molecular data, Pristimantis etsa sp. nov. The new species is diagnosed from its congeners by the following combination of characters: female SVL 32.5 mm and male SVL 18.3 mm, dorsolateral folds formed by rows of subconical tubercles, strongly areolate ventral skin, two distinct rows of forearm tubercles, one along the ventrolateral margin and a second along the externolateral margin of the forearm, and a prominent yellow groin blotch in the female holotype. The species belongs to the Pristimantis cryptomelas group, part of the Huicundomantis subgenus, and is closely related to P. nangaritza, P. verrucosus, and P. plateado. Currently, the species is known only from its type locality, where it inhabits low montane evergreen forests at elevations of 1,655–1,830 m. Additionally, we discuss the use of the term “ulnar tubercles” in Pristimantis, noting that it may refer to tubercles occupying different positions on the forearm.