A NEW SPECIES OF OSORNOPHRYNE (ANURA: BUFONIDAE) FROM VOLCAN SUMACO, ECUADOR WITH NOTES ON OTHER MEMBERS OF THE GENUS

Resumen

A new species of the Andean genus Osornophryne is described from the cloud forests of Volcan Sumaco in central Ecuador. This species can be distinguished from all other members of the genus by the combination of its unique ventral coloration, rugose skin, and pustular dorsal ridges. Individuals of two other species of Osornophryne, 0. guacamayo and 0. antisana, were encountered at the same locality. I discuss some aspects of the microhabitat preferences and diets of these toads. Morphometric comparisons and notes on the status of digital reduction in the genus are included.