A new species of spiny-backed tree frog, genus Osteocephalus (Anura, Hylidae), from the Yanachaga Chemillén National Park in central Peru

Preserved specimens of Osteocephalus vasquezi sp. nov. showing variation in dorsal and ventral pattern. Left to right, first row: CORBIDI 7271 (female), 7280 (female), 7274, 7276, and the holotype 7284 (males); second row CORBIDI 7277, 7278, 7279, 7281, 7283 (males); third row: CORBIDI 7271 (female), 7280 (female), 7274, 7276, and the holotype 7284 (males); fourth row: CORBIDI 7277, 7278, 7279, 7281, 7283 (males). All specimens are shown at the same scale.