Black-headed spider monkey
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The black-headed spider monkey (Ateles fusciceps) is a type of New World monkey from Central and South America, specifically Colombia, Ecuador, and Panama.[1] Although primatologists such as Colin Groves (1989) follow Kellogg and Goldman (1944) in treating A. fusciceps as a separate species, other authors, including Froelich (1991), Collins and Dubach (2001) and Nieves (2005) treat it as a subspecies of Geoffroy's spider monkey.[2][3]
The two subspecies are:[2]
- Ateles fusciceps fusciceps – northwestern Ecuador.[1]
- Ateles fusciceps rufiventris – southwest Colombia to eastern Panama.[1]
Habitat
A. f. fusciceps lives in tropical and subtropical humid forests between Script error: No such module "convert". above sea level. It lives in population densities of 1.2 monkeys per square kilometer. A. f. rufiventris lives in dry forests, humid forests and cloud forests, and can live up to Script error: No such module "convert". above sea level.[1]
Description
A. f. fusciceps has a black or brown body and a brown head. A. f. rufiventris is entirely black with some white on its chin. The black-headed spider monkey is one of the larger New World monkeys. The head and body length, excluding tail, typically ranges between Script error: No such module "convert".. The prehensile tail is between Script error: No such module "convert".. On average, males weigh Script error: No such module "convert". and females weigh Script error: No such module "convert".. Its brain weighs Script error: No such module "convert"..[4]
Diet
The Black spider monkey is primarily frugivorous, with the consumption of fruit consisting of about 80% of their diet. the remainder of its diet is omnivorous and consists of leaves, nuts, seeds, bark, insects, and flowers.[1]
Behavior
The black-headed spider monkey is arboreal and diurnal. The species is highly sociable, living in social groups with up to 20 individuals but travels in smaller groupings. Most travel is done by brachiating and climbing through woodland areas.[5]
Reproduction
When mating, females may consort with a male for up to three days, or else mate with several males. Mating occurs with the male and female face to face, and can last for five to 10 minutes. The gestation period is between 226 and 232 days. The infant rides on its mother's back for 16 weeks, and is weaned at 20 months. Females attain sexual maturity at 51 months; males at 56 months. Females give birth every three years.[4]
The black-headed spider monkey is considered to be endangered by the International Union for Conservation of Nature (IUCN) due to an estimated population loss of more than 50% over 45 years (2018–2063), from hunting and human encroachment on its range of habitation.[1]
Captive black-headed spider monkeys have been known to live more than 24 years.[6]
Gallery
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Ateles fusciceps rufiventris moving
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A. f. rufiventris getting something out of the water
References
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- Spider monkeys
- Primates of Central America
- Mammals of Colombia
- Mammals of Ecuador
- Vertebrates of Panama
- Primates of South America
- Endangered fauna of North America
- Endangered biota of South America
- Mammals described in 1866
- Taxa named by John Edward Gray