A new species of the Eleutherodactylus unistrigatus group is described from the area of the lake Los Cóndores, Department of San Martín, Peru, at elevations of 2800-3000 m in the Cordillera Central in northern Peru. The new species differs from the other described species of the genus by having smooth dorsum with large tubercles on the flanks, some of which are longitudinally ovoid or longer than wide, and by having bright red or orange (bright cream in preservative) coloration with transverse black bars on the posterior surface of thighs. Copyright 2007 Society for the Study of Amphibians and Reptiles.