About Pithecia milleri Allen, 1914
Miller's saki, with the scientific name Pithecia milleri Allen 1914, is also called Miller's monk saki. It is a species of saki monkey, which is a type of New World monkey. Its distribution covers parts of southwestern Colombia and northeastern Ecuador, and it may also live in adjacent areas of Peru. J. A. Allen originally described this population as a full species. In 1987, it was reclassified as a subspecies of the monk saki, Pithecia monachus. It was restored to full species status in 2014. Taxonomic confusion around saki monkeys has stemmed partially from museum specimens that have incorrect or unclear labels. Like other saki monkey species, male and female Miller's sakis have differently colored fur. Females are generally more grayish across the body and on the face. Males are darker, with a grizzled black coat, but have brown fur on the face and forearms.
