Imbabura Province
Its type locality is at 1500 m in the Hacienda Chinipamba, Imbabura Province in North-West Ecuador. It inhabits areas west of the Andes Mountains. Some authorities, such as Froelich (1991), Collins and Dubach (2001) and Nieves (2005), do not recognize the black-headed spider monkey as a distinct species and so treat the brown-headed spider monkey as a subspecies of Geoffroy's spider monkey.