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We describe a new species of terrestrial frog of the genus Pristimantis , located in the south Andes of Ecuador. The new species is characterized by: presence of dentigerous processes of vomer that are triangular in outline; ulnar tubercles flattened and disposed in a longitudinal, fold-like row; and a distinctive ventral coloration light to dark brown with white warts. We describe the call of an adult male, a single note with an average frequency of 4.23 kHz and two partial harmonics, and an average duration of 207 ms. Describimos una nueva especie de rana terrestre Pristimantis de los Andes sur de Ecuador. La nueva especie se caracteriza por la presencia de procesos dentigeros del vomer de contorno triangular; tuberculos ulnares aplanados, dispuestos en una hilera a manera de pliegue; y una distintiva coloracion ventral de cafe claro a cafe oscuro con verrugas pigmentadas de blanco. Su canto presenta una frecuencia dominante promedio de 4.23 kHz con dos parciales armonicos.

avances en ciencias e ingenierías/avances en ciencias e ingenierías (en línea)

Ranas terrestres en los ecosistemas surandinos de Ecuador IV: Una nueva especie de Pristimantis (Anura: Strabomantidae) de los páramos sur del Parque Nacional Sangay