|Black capuchin in Argentina|
|Combined range of S. n. nigritus and S. n. cucullatus. S. n. robustus is found just northeast of this range (see text).|
The black capuchin, (Sapajus nigritus), also known as the black-horned capuchin, is a capuchin monkey from the Atlantic Forest in south-eastern Brazil and far north-eastern Argentina. Historically, it was included as a subspecies of the tufted capuchin.
The black capuchin was originally named Cebus nigritus or Cebus apella nigritus, and while this has been changed, a lot of sources still name the black capuchin as part of the genus Cebus.
The black capuchin is a social animal. It likes to live in groups, usually consisting of 6 to 20 members, and is hierarchal. Despite the fact that these groups tend to be made up of more females than males, the alpha female of the group is submissive to the alpha male.
Communication within groups consists of bodily, facial and vocal communications. One example of this is the 'scream embrace mechanism’, a high pitched called used to regroup (usually male) members of a group.
The black capuchin is found in the Atlantic region of North-eastern Argentina and South-eastern Brazil, with its habitat overlapping with other capuchin species. They are considered arboreal, mainly dwelling in the tree canopy, however will also drop to the forest floor to forage, where insects and nuts are most abundant.
The black capuchin has three subspecies: Sapajus n. nigritus (nominate) and S. n. cucullatus are found in the southern part (the former eastwards, and the latter westwards) of this species' range, and both have a distinctive pair of tufts on the crown, as also suggested by the alternative common name of this species; black-horned capuchin. The last subspecies, the crested or robust tufted capuchin (S. n. robustus) is found in the northern part of this species' range (north of the Doce River), and has a median conical crest on the crown. It is sometimes considered a separate species.
The black capuchin's population number is unknown, but thought to be declining. This is due mostly to habitat loss, hunting, and the pet trade, however the species has been observed to be able to survive in fragmented and sparse areas of canopy. The two southern subspecies remain relatively widespread and are rated as Near Threatened by the IUCN. The distinctive northern subspecies has a far more restricted distribution and it is considered Endangered.
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