The mantled guereza[1] (Colobus guereza), also known as the guereza, Abyssinian black-and-white colobus, or eastern black-and-white colobus, is a black-and-white colobus, a species of Old World monkey.
- The Colobus genus members differ from members of the other subfamily, Cercopithecinae, by not having cheek pouches and the presence of prominent ischial calluses, separate in females and contiguous in males.
- The coat color is clearly black and white. The face is gray and hairless.
- The face and calluses are outlined in white. On the sides is a white U-shaped coat of different lengths.
- The outer part of the thigh is variously whitish, and the tail is whitish or yellowish from tip to base. Also, there is a large white tuft at the end of the tail.
