Distribution. NW Borneo, W Sabah State (along W coast N to Mt Kinabalu), NE Brunei, and N Sarawak State (from its type locality Niah and the lower Baram River, E inland to 2° 40' N, and the border with N Kalimantan). in Cercopithecidae

Distribution. NW Borneo, W Sabah State (along W coast N to Mt Kinabalu), NE Brunei, and N Sarawak State (from its type locality Niah and the lower Baram River, E inland to 2° 40' N, and the border with N Kalimantan). ; Published as part of Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Cercopithecidae, pp. 550-755 in Handbook of the Mammals of the World – Volume 3 Primates, Barcelona :Lynx Edicions on page 717, DOI:10.5281/zenodo.6867065