Allen's swamp monkey

The Allen's swamp monkey (Allenopithecus nigroviridis) is a species of Old World monkey and the only member of the genus Allenopithecus. Phylogenetically, it is a sister clade to the guenons, but differs in dentition and habits.

Allen's swamp monkey[1]
Allens swamp monkey.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Cercopithecidae
Subfamily: Cercopithecinae
Tribe: Cercopithecini
Genus: Allenopithecus
Lang, 1923
A. nigroviridis
Binomial name
Allenopithecus nigroviridis
(Pocock, 1907)
Allen's Swamp Monkey area.png
Allen's swamp monkey range

Allen's swamp monkey was named after American zoologist Joel Asaph Allen.[3]


Allen's swamp monkey lives in the Congo Basin, in the Republic of Congo and in the west of the DRC. It was recorded from Dzanga-Sangha Special Reserve in the Central African Republic in 2016.[4]


This monkey is a rather strongly built animal. The slight webbing of the fingers and toes point to its partially aquatic way of life. Allen's swamp monkey can reach a full body length from 45 to 60 cm, with a roughly 50-cm-long tail. Males, weighing up to 6 kg, are substantially larger than the females (up to 3.5 kg).


Although still hunted for its meat, Allen's swamp monkey is increasingly seen as a household pet. (Photo taken in Basankusu, 2007)

Allen's swamp monkey is a diurnal animal and regularly looks for food on the ground. It inhabits swampy, water-rich areas and can swim well, diving to avoid danger. It lives in social groups of up to 40 animals, communicating with different calls, gestures, and touches.

Its diet consists of fruits and leaves, as well as beetles and worms.

Little is known of the mating habits of this species. The females bear young, which are weaned around three months old and are mature after three to five years. Its lifespan can be as long as 23 years. Raptors, snakes, and the bonobo are the natural predators of Allen's swamp monkey. It is also hunted for its meat.


  1. ^ Groves, C. P. (2005). "Order Primates". In Wilson, D. E.; Reeder, D. M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 153. ISBN 978-0-8018-8221-0. OCLC 62265494.
  2. ^ Maisels, F.; Mittermeier, R.A.; Oates, J.F.; Hart, J. (2020). "Allenopithecus nigroviridis". IUCN Red List of Threatened Species. 2020: e.T865A166606573. doi:10.2305/IUCN.UK.2020-1.RLTS.T865A166606573.en. Retrieved 19 November 2021.
  3. ^ Beolens, Bo; Watkins, Michael; Grayson, Michael (2009). The Eponym Dictionary of Mammals. Johns Hopkins University Press. p. 8. ISBN 9780801895333.
  4. ^ Cassidy, Rod. "Allens monkey Youtube". YouTube. Sangha Lodge. Archived from the original on 2021-12-22. Retrieved 21 September 2016.

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