Crowned guenon  (Cercopithecus pogonias)

The crowned guenon is a widespread and common African forest monkey, with distinctive facial markings and prominent tufted ears (4) (5). Currently this species encompasses seven different subspecies, which vary in location and, to a small degree, in appearance. Nevertheless, they generally possess a finely speckled brown and grey coat, becoming black on the lower limbs and on the lower part of the long tail (2) (4). In contrast, the rump, belly and the insides of the legs are golden-yellow and, in the male, the scrotum is blue (4). Certain subspecies, such as the Congo Basin Wolf's monkey, have more extensive golden colouration, extending across the entire hindquarters (6). The crowned guenon’s face is mostly dark blue, except for the muzzle, which is pink. The fur surrounding the face is yellow, and characteristically marked with a wide black stripe running from the side of the eye to the ear and across the middle of the forehead where it forms a small crest (2) (4). In addition to these markings, the Congo Basin Wolf's monkey has a conspicuous white band running across the brow (7).