The Calabar angwantibo (Arctocebus calabarensis), also known as the Calabar potto, is a strepsirrhine primate of the family Lorisidae. It shares the genus Arctocebus with the golden angwantibo (Arctocebus aureus). It is closely related to the potto (Perodicticus potto) and to the various lorises.
The Calabar angwantibo lives in the rainforests of west Africa, particularly in tree-fall zones. In areas where the forest has been cleared, it has been known to live on farmland. Its range covers Cameroon, Nigeria and Equatorial Guinea. The species takes its name from the Nigerian city of Calabar.
The Calabar angwantibo weighs between 266 and 465 grams. It has orangish-yellow fur on its back, grey or white fur on its belly, and a distinctive white line on its forehead and nose. Like other lorids, this angwantibo has a very short index finger, which allows it to get a strong grip on tree branches. The second toe on each foot has a specialised claw that the angwantibo uses for grooming. The Calabar angwantibo is the only primate to have a functioning nictitating membrane (third eyelid).[3]
The Calabar angwantibo is nocturnal and arboreal. It stays considerably lower in the trees than the other nocturnal strepsirrhines in its range, and is typically found between 5 and 15 metres above ground. It moves by climbing very slowly through the trees, always grasping branches with at least three of its limbs at a time. During the day the angwantibo sleeps under dense foliage, hanging from a branch.
The Calabar angwantibo's diet consists mainly of insects, especially caterpillars, but it also eats some fruit. It will eat strong-smelling insects that other animals reject. Before eating a caterpillar, the angwantibo wipes it carefully with its hands to remove any poisonous barbs.
When confronted by a predator, the Calabar angwantibo will roll up into a ball, but keep its mouth open beneath its armpit. If the attacker persists, the angwantibo will bite it and not let go.[citation needed]
Calabar angwantibos forage for food alone, but each male's territory overlaps that of several females. Angwantibos reinforce social bonds through mutual grooming and scent-marking. Mating takes place only in the final phase of the female's estrous cycle, and is performed hanging upside-down from a branch. The female gives birth to a single infant after a gestation period of 131 to 136 days; the young are normally born between January and April. Infants are born with their eyes open and can cling to their mother's fur right away.
^Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. pp. 121–122. ISBN 0-801-88221-4. OCLC 62265494.
^Oates, J.F.; Svensson, M. (2019). "Arctocebus calabarensis". IUCN Red List of Threatened Species. 2019: e.T2054A17969996. doi:10.2305/IUCN.UK.2019-1.RLTS.T2054A17969996.en. Retrieved 12 November 2021.
^Montagna, W., Machida, H., and Perkins, E. M. 1966. "The skin of primates XXXIII.: The skin of the angwantibo". American Journal of Physical Anthropology. Vol. 25, 277-290.
and 29 Related for: Calabar angwantibo information
The Calabarangwantibo (Arctocebus calabarensis), also known as the Calabar potto, is a strepsirrhine primate of the family Lorisidae. It shares the genus...
Angwantibos are two species of strepsirrhine primates classified in the genus Arctocebus of the family Lorisidae. They are also known as golden pottos...
golden angwantibo (Arctocebus aureus) is a strepsirrhine primate of the family Lorisidae. It shares the genus Arctocebus with the Calabarangwantibo (Arctocebus...
movements are not restricted by it. Only one species of primate, the Calabarangwantibo, is known to have a functioning nictitating membrane. With ocular...
associated muscles are also vestigial. Only one species of primate, the Calabarangwantibo, is known to have a functioning nictitating membrane. The orbitalis...
2022-1.RLTS.T12375A217756381.en. Nekaris, Anna (2013). "Family Lorisidae: Angwantibos, pottos and lorises". In Mittermeier, Russell A.; Rylands, Anthony B...
lorisids are all slim arboreal animals and comprise the lorises, pottos and angwantibos. Lorisids live in tropical, central Africa as well as in south and southeast...
Lorisidae Subfamily Perodicticinae Genus Arctocebus Calabarangwantibo, Arctocebus calabarensis Golden angwantibo, Arctocebus aureus Genus Perodicticus Central...
"potto" in their names: the two golden potto species (also known as angwantibos) and the false potto. Although it has been suggested that the differences...
closest relatives are the African lorisids, the pottos, false pottos, and angwantibos. They are less closely related to the remaining lorisoids (the various...
doi:10.3906/zoo-1901-20. Nekaris, K. A. I. (2013). "Family Lorisidae (Angwantibos, Pottos and Lorises)". In Mittermeier, R. A.; Rylands, A. B.; Wilson...
subspecies in Lorisoidea assessed as least concern. Species Golden angwantiboCalabarangwantibo Gray slender loris Milne-edwards's potto East African potto...
Members of this superfamily are called lorisoids, and include lorises, angwantibos, pottos, galagos, and bushbabies. Lorisoidea is one of two superfamilies...
Several words of Efik origin can equally be found in English, such as Angwantibo, Buckra and Obeah. The Efik Language is written using the Latin alphabet...
placed it closest to the family Lorisidae, together with the potto, the angwantibos, and the lorises. The discovery, published in the Anthropological Papers...
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