The guenons are Old World monkeys of the genus Cercopithecus. Not all members of this genus have the word "guenon" in their common names; also, because of changes in scientific classification, some monkeys in other genera may have common names that include the word "guenon". Nonetheless, the use of the term guenon for monkeys of this genus is widely accepted.
The blue monkey or diademed monkey is a species of Old World monkey native to Central and East Africa, ranging from the upper Congo River basin east to the East African Rift and south to northern Angola and Zambia. It sometimes includes Sykes', silver, and golden monkeys as subspecies.
The Dryas monkey, also known as Salonga monkey, ekele, or inoko, is a little-known species of Old World monkey found only in the Congo Basin, restricted to the left bank of the Congo River. It is now established that the animals that had been classified as Cercopithecus salongo were in fact Dryas monkeys. Some older sources treat the Dryas monkey as a subspecies of the Diana monkey and classify it as C. diana dryas, but it is geographically isolated from any known Diana monkey population.
Sclater's guenon, also known as Sclater's monkey and the Nigerian monkey, is an Old World monkey that was first described by Reginald Innes Pocock in 1904 and named after Philip Sclater. It is an arboreal and diurnal primate that lives in the forests of southern Nigeria. It should not be confused with the closely related species, the white-throated guenon, which occurs in Nigeria and Benin. Sclater's guenon was formerly classified as a subspecies of the red-eared guenon.
The mona monkey is an Old World monkey that lives in western Africa between Ghana and Cameroon. The mona monkey can also be found on the island of Grenada as it was transported to the island aboard slave ships headed to the New World during the 18th century. This guenon lives in groups of up to thirty-five in forests. It mainly feeds on fruit, but sometimes eats insects and leaves. The mona monkey has brown agouti fur with a white rump. Its tail and legs are black and the face is blue-grey with a dark stripe across the face. The mona monkey carries food in cheek pouches.
The Hamlyn's monkey, also known as the owl-faced monkey, is a species of Old World monkey that inhabits the bamboo and primary rainforests of the Congo. This species is exceedingly rare and known only from a few specimens; little is known about it. However these specimens tend to be widely dispersed throughout the eastern part of Congo, from the Epulu River to the Lukuga River and from the Congo River to the Kabale Forest, with one example in northwestern Rwanda. Geographically it corresponds quite closely to another species of monkey, L'Hoest's monkey C. lhoesti. It travels on the ground, and researchers think that it may be awake primarily by night.
Wolf's mona monkey, also called Wolf's guenon, is a colourful Old World monkey in the family Cercopithecidae. It is found in central Africa, primarily between the Democratic Republic of the Congo and Uganda. It lives in primary and secondary lowland rainforest and swamp forest.
The black colobus, or satanic black colobus, is a species of Old World monkey belonging to the genus Colobus. The species is found in a small area of western central Africa. Black colobuses are large, completely covered with black fur, and like all other Colobus monkeys, do not have a thumb. The species has faced large declines in population due to habitat destruction and hunting by humans, and was consequently listed as Vulnerable on the IUCN Red List in 1994.
Campbell's mona monkey, also known as Campbell's guenon and Campbell's monkey, is a species of primate in the family Cercopithecidae found in the Ivory Coast, Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Senegal, and Sierra Leone. It was named for Henry Dundas Campbell, in 1838. Lowe's mona monkey was previously considered a subspecies of Campbell's mona monkey. The International Union for Conservation of Nature has rated this species as being a near-threatened species because it has a wide range and is able to adapt to degraded habitats.
The red-eared guenon, also called red-eared monkey, or russet-eared guenon is a primate species in the family Cercopithecidae. It is native to subtropical and tropical moist lowland forests in Cameroon, Equatorial Guinea and Nigeria. It is listed as Vulnerable on the IUCN Red List and is threatened by habitat loss, illegal bushmeat hunting and pet trade.
The crested mona monkey, also known as the crowned guenon, crowned monkey, golden-bellied guenon, or golden-bellied monkey,, is a species of African primate in the family Cercopithecidae found in west central Africa.
The silver monkey is a species of Old World monkey found primarily in East Africa. Its range includes Burundi, Tanzania, Rwanda, Uganda, and the Democratic Republic of the Congo. The silver monkey was previously considered a subspecies of the blue monkey.
The golden monkey is a species of Old World monkey found in the Virunga volcanic mountains of Central Africa, including four national parks: Mgahinga, in south-west Uganda; Volcanoes, in north-west Rwanda; and Virunga and Kahuzi-Biéga, in the eastern Democratic Republic of Congo. It is restricted to highland forest, especially near bamboo.
Sykes' monkey, also known as the white-throated monkey or Samango monkey, is an Old World monkey found between Ethiopia and South Africa, including south and east Democratic Republic of Congo. It is named after English naturalist Colonel William Henry Sykes (1790-1872), and has been considered conspecific with the blue monkey, but has a large white patch on the throat and upper chest, and a grizzled cap.
The tantalus monkey is an Old World monkey from Africa that ranges from Ghana to Sudan. It was originally described as a subspecies of the grivet. All species in Chlorocebus were formerly in the genus Cercopithecus. It is a common species with a wide range, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
Lowe's mona monkey is an Old World monkey in the family Cercopithecidae found from the Ivory Coast to Ghana. It was previously classified as a subspecies of Campbell's mona monkey C. campbelli.
The Niger Delta red colobus is a critically endangered species of colobus monkey endemic to the western part of the Niger Delta. It is threatened by hunting and habitat loss.
The red-tailed monkey, also known as the black-cheeked white-nosed monkey, red-tailed guenon, redtail monkey, or Schmidt's guenon, is a species of primate in the family Cercopithecidae.
The Lomami red colobus is a type of red colobus monkey from central Africa. Historically it had been treated as a subspecies of the Central African red colobus, but more recent taxonomies generally treat it as a separate species.
