name = AtelidaeMSW3 Groves|pages=148-152]
image_width = 200px
Geoffroy's Spider Monkey
familia = Atelidae
familia_authority = Gray, 1825
subdivision_ranks = Genera
subdivision = "Alouatta" "Ateles" "Brachyteles" "
Lagothrix" " Oreonax"
The Atelidae are one of the four families of
New World monkeys now recognised. Formerly they were included in the family Cebidae. Atelids are general larger monkeys, and the family includes the howler, spider and woolly monkeys. They are found throughout the forested regions of Central and South America, from Mexicoto northern Argentina.
monkeys are small to moderate in size, ranging from 34 to 72 cm in head-body length, with the howler monkeys being the largest, and the spider monkeys the smallest, members of the group. They have long, almost hairless prehensile tails with a sensitive tactile padon the underside. The tail is frequently used as 'fifth limb' while moving through the trees where they make their homes. They also have nails on their fingers and toes, enabling them to climb. Most species have predominantly dark brown, grey, or black fur, often with paler markings.cite book |editor=Macdonald, D.|year=1984 |title= The Encyclopedia of Mammals|publisher= Facts on File|location=New York|pages= 361|isbn= 0-87196-871-1]
arborealand diurnalanimals, with most species restricted to dense rain forest, although some howler monkey species are found in drier forests, or wooded savannah. They mainly eat fruit and leaves, although the smaller species, in particular, may also eat some small insects. They have the dental formula:dentition2|220.127.116.11|18.104.22.168
Females give birth to a single infant (or, rarely, twins) after a
gestationperiod of 180 to 225 days. In most species, individuals give birth every one to three years, and there is little, if any, seasonal peak in the number of births.
Atelid monkeys are typically
polygamous, and live in social groups with anything up to twenty five adults, depending on species. Where groups are relatively small, as is common amongst the howler monkeys, a single male monopolises a 'harem' of females, but larger groups will contain several males, with a clear hierarchy of dominance.
There are currently 23 recognized species of atelid monkey, grouped into five genera, and two subfamilies.
* Family Atelidae: howler, spider and woolly monkeys
** Subfamily Alouattinae
*** Genus "Alouatta": howler monkeys
*** Genus "Ateles": spider monkeys
*** Genus "
Brachyteles": muriquis (woolly spider monkeys)
*** Genus "
Lagothrix": woolly monkeys
*** Genus "Oreonax": Yellow-tailed Woolly Monkey
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