Allen's Swamp Monkey

Kingdom Order Family Genus Species
Animalia Primates Cercopithecidae Allenopithecus Allenopithecus nigroviridis
Allen's Swamp Monkey
IUCN Status: Least-Concern
  • Common Name: Allen’s Swamp Monkey
  • Taxonomy Classification Year: 1907
  • Monkey Size: 45 to 60 cm (18 to 23.6 inches)
  • Skin Color(s): Brown, gray and green
  • Habitat: Forest, rainforest
  • Diet: Omnivorous
  • Native Countries: Cameroon, Democratic Republic of Congo

Allen’s Swamp Monkey Distribution

Allen’s Swamp Monkey Characteristics

Allen's Swamp Monkey

Allen’s swamp monkeys[1] are small, stocky monkeys with gray to brown fur and long tails.

  • These highly social primates live in the swamp forests of central Africa, where they mostly spend their time in the trees.
  • Allen’s swamp monkey is comparable to guenons in size and body proportions. Both males and females have dark khaki fur with a whitish underside.
  • Typically, their faces are framed by long dark gray fur on their cheeks, outlined with dark lines.
  • The skin on their neck is light gray. Both sexes have a patch of orange-red skin under the tail.
  • Females have prominent oestrous bulges (other female guenon species do not have this), and males have light blue scrotal skin.
  • The light webbed fingers and toes indicate their partially aquatic lifestyle.

Allen’s Swamp Monkey Facts

Allenopithecus Nigroviridis

  • Allen’s swamp monkeys use gestures and calls to communicate with their squadmates.
  • The swamp monkey is a very social primate, living in groups of 40 or more.
  • The lifespan of this species is estimated to be around 28 years.
  • Allen’s swamp monkey’s tail is longer than its entire body (about 2 feet long)!
  • It was named after Joel Asaph Allen, an American zoologist.

Suggested Reading: Different Kinds of Monkeys

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BioExplorer.net. (2022, August 11). Allen’s Swamp Monkey. Bio Explorer. https://www.bioexplorer.net/animals/mammals/monkeys/allens-swamp-monkey/.
BioExplorer.net. "Allen’s Swamp Monkey" Bio Explorer, 11 August 2022, https://www.bioexplorer.net/animals/mammals/monkeys/allens-swamp-monkey/.
BioExplorer.net. "Allen’s Swamp Monkey" Bio Explorer, August 11 2022. https://www.bioexplorer.net/animals/mammals/monkeys/allens-swamp-monkey/.
Key References
  • [1]“Allen’s swamp monkey | Smithsonian’s National Zoo”. Accessed July 30, 2022. Link.

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