definition of Wikipedia
|Diana Monkey at the Henry Doorly Zoo|
The Diana monkey ranges from 40 to 55 cm in length, excluding its tail, which is of a uniform 3–4 cm diameter and 50–75 cm long. Adults weigh between 4–7 kg. Individual Diana monkeys may live for up to 20 years.
They are generally black or dark grey, but have a white throat, crescent-shaped browband, ruff and beard; the browband gave the species its common name, since it was held to resemble the bow of the goddess Diana. The monkeys' underarms are also white, and they have a white stripe down their thighs, while the backs of their thighs, and their lower backs, are a chestnut colour. Apart from the browband, ruff and beard, and some fringes on their limbs, their fur is short and sleek in appearance.
Like most primates, Diana monkeys can always carry diseases that can be communicated to humans, like yellow fever and tuberculosis, but they are not important carriers of these. The species is regarded as vulnerable by the IUCN as well as by the United States Fish and Wildlife Service, the chief dangers to them being habitat destruction (they are now virtually confined to coastal areas) and hunting for bushmeat.
Two taxa formerly considered subspecies of the Diana monkey have recently been elevated to full species status: the Roloway monkey (C. roloway) is found in Côte d'Ivoire and Ghana, and the Dryas monkey (C. dryas) found in the DR Congo.
The Diana monkey is found in the primeval forests, and does not thrive in secondary forests. It is active during the day. It feeds at all levels of the canopy, rarely comes down to the ground. Diana monkeys retreat to the upper levels of the trees at night, though they do not make nests. They feed mainly on fruit and insects, but will also take flowers, young leaves and invertebrates, and are in turn preyed on by the Crowned Hawk-eagle, the Leopard, and the Common Chimpanzee and humans.
The Diana monkey is a noisy presence in the forest. Its marked coloration allows a wide range of visual social signals, and it also has a wide range of alarm calls, with different sounds for different predators. The monkey has distinctive alarm calls for different kinds of predators, and recent research has shown that other forest residents such as the Yellow-casqued Hornbill are able to discriminate these and take appropriate action.
Groups consist of a single male with a number of reproducing females and their infants. In good conditions, adult females reproduce annually. Gestation lasts about 5 months, and the young nurse for a further 6 months. Normally only a single infant is born. Although the young are born in a fairly well developed condition, with open eyes and able to grasp their mother, at least in zoo conditions Diana monkey mothers appear anxious and possessive, rarely letting young infants leave them. As infants grow, however, they become very playful. Juveniles reach sexual maturity at an age of about 3 years. Daughters remain in their mothers' social groups, while males leave their natal groups shortly before attaining sexual maturity.
Three Diana Monkeys at Port Lympne Zoo
|Wikispecies has information related to: Diana Monkey|
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