Species Allenopithecus nigroviridis
Also known as Allen’s Swamp Monkey – a species of Guenon native to flooded forests in western and central Africa. They were discovered in 1923 and were the last primate genus discovered until Rungwecebus kipunji . Fleagle says that this species is the most primitive guenon, although it does have some interesting derived features (such as webbing between the fingers and toes).
It is a medium sized guenon that lives in multimale-multifemale groups of up to forty individuals. It is sexually dimorphic. It is mainly frugivorous, but eats leaves and invertebrates as well. Allen’s swamp monkey occasionally forms mixed species associations with the red tailed monkey and Wolf’s monkey.
Added Later: Be sure to check out Carls’ post on Howler Monkeys which is slated to be a two or three parter. Part one is great…