Roloway monkey (Cercopithecus diana roloway)
West Africa's roloway monkey is near extinction mainly due to bushmeat hunting.
(Photo: Sebastien Bozon/Getty Images)

seen from United States

seen from Norway
seen from United States
seen from United States
seen from China
seen from China
seen from United States

seen from Israel
seen from France
seen from Malaysia

seen from Germany
seen from Netherlands
seen from United States

seen from Malaysia

seen from Malaysia
seen from United States
seen from United States
seen from United Kingdom
seen from Netherlands
seen from Germany
Roloway monkey (Cercopithecus diana roloway)
West Africa's roloway monkey is near extinction mainly due to bushmeat hunting.
(Photo: Sebastien Bozon/Getty Images)
Roloway monkey By: W. S. Berridge From: The Book of the Animal Kingdom 1910
Scientists have noted that the Roloway monkey has impressive vocal chords, which makes it odd that the species has never been witnessed making noise. Great debate has risen over why their voices seemingly go unused.
The roloway monkey used to live in the forests of Ghana and Côte d’Ivoire, but it has become extinct in Ghana.
Diana Monkey/Diana Guenon (Cercopithecus diana) -
There are two subspecies of Diana Monkey that in 2008 were acknowledged as their own species. The Dryas Monkey (critically endangered) and Roloway Monkey (endangered) are both very closely related to the Diana Monkey. All of them have similar markings and small white beards, although the length varies between species.
These monkeys, or guenon, are a medium sized Old World monkey, found in West and Central Africa. They can grow up to about 10 lbs with a tail much longer than its body. This long tail is perfect for agility and balance in its treetop homes. They are diurnal, and forage on fruit, tender leaves, seeds, invertebrates and flowers. They almost never leave the trees. Their predators eagles, leopards, and chimps.
They are extremely social, and can live in mixed species troops of up to 30 individuals, with one male. Their socialization relies heavily on vocalization and body language. Healthy females can produce 2 babies every year.
All 3 of these guenon are vulnerable to poaching for meat, deforestation, and logging, especially the Dryans Monkey.