Woolly spider monkeys, or muriqui, are the monkeys of the genus Brachyteles, which is closely related to the spider monkeys and the woolly monkeys. There are two species, the Southern (B. arachnoides) and Northern Muriqui (B. hypoxanthus). They are the two largest species of New World monkeys, and the northern species is one of the most endangered of all the world's monkeys. They are found only in the Atlantic coast forests of southeastern Brazil at altitudes ranging from sea level to 1500 m. See genus (mathematics) for the use of the term in mathematics. ... Species Ateles paniscus Ateles belzebuth Ateles chamek Ateles hybridus Ateles marginatus Ateles fusciceps Ateles geoffroyi Spider monkeys are New World monkeys of the family Atelidae, subfamily Atelinae. ... Species Lagothrix lagotricha Lagothrix cana Lagothrix lugens Lagothrix poeppigii The woolly monkeys are the genus Lagothrix of New World monkeys, usually placed in the family Atelidae. ... Families Cebidae Nyctipithecidae Pitheciidae Atelidae The New World monkeys or Platyrrhines are the four families of primates that are found in Central and South America, the Cebidae, Nyctipithecidae, Pitheciidae and Atelidae. ... Cynomolgus Monkey at Batu Caves, Malaysia A monkey is any member of two of the three groupings of simian primates. ...

They weigh 10-20 pounds. The Woolly Spider Monkey is 15-23 inches long without it's tail. They range from brown to black. The underside of their tails has no fur at the end.

Muriqui are folivores, but will also eat significant amounts of fruit and flowers in the rainy season, as well as bark, bamboo, ferns, nectar, pollen, and seeds. In Zoology, a folivore is an animal that specializes in eating leaves. ...

As is common to many Platyrrhini, males are philopatric and females tend to move out into other groups at the onset of adolescence around 5 - 7 years of age, later reaching maturity at an average age of 11 years. On average males reach maturity in half this time. Families Cebidae Nyctipithecidae Pitheciidae Atelidae The New World monkeys or Platyrrhines are the four families of primates that are found in Central and South America, the Cebidae, Nyctipithecidae, Pitheciidae and Atelidae. ...

Observed group sizes range from 8 to 43, and contain plentiful amounts of both males and females. Muriqui are polygamous, and unlike many other primates males spend large periods of time together without significant aggressive encounters. As such, they are also not territorial. Polygamy, literally many marriages in ancient Greek, is a marital practice in which a person has more than one spouse simultaneously (as opposed to monogamy where each person has a maximum of one spouse at any one time). ...

The name Muriqui comes from a native Tupi word meaning something like 'largest monkey'. The arachnoides species are also known as Omono Carvoeiro, which translates to Charcoal Monkey. Tupi is the name of a language family that was spoken along the Brazilian coast at the time of its discovery. ...

• Southern Muriqui, Brachyteles arachnoides
• Northern Muriqui, Brachyteles hypoxanthus