Skull morphology diagram in dorsal (left column) and ventral (right column) views in four species of the Pristimantis myersi species group: A, B P. donnelsoni sp. nov., DHMECN 4808 C, D P. kayi sp. nov., DHMECN 14447 E, F P. gladiator DHMECN 12465 G, H P. festae DHMECN 9294. Detail of the skull bones abbreviations: pmax = premaxilla; max = maxilla; spheth = sphenethmoides; fpar = frontoparietal; pter = pterigoides; pro = prootic; q = quadratojugal; sp = squamosal; exo = exoccipital; prph = parasphenoides. Frontoparietal fontanelle not coloured.