Ecuadorian mantled howler
The Ecuadorian mantled howler is a subspecies of the mantled howler, A. palliata. It ranges from Panama through Colombia and Ecuador into northern Peru. The range limits between the Ecuadorian mantled howler and the golden-mantled howler are not entirely clear. The Ecuadorian mantled howler replaces the Golden-mantled howler in either extreme eastern Costa Rica or western Panama. The Ecuadorian mantled howler differs from the golden-mantled howler primarily by being paler, with a more yellowish mantle.