Brown Spider Monkey

Ateles hybridus

Discovery of Species

The discovery date of this species is unknown. But, over the past 45, this species population has declined by 80%. If the destruction that is causing this drop in numbers continues, the species will continue to fall at this rate.

Location and Population

Brown Spider Monkeys are commonly found in subtropical and tropical moist lowlands located in Venezula and Columbia. In the past year, researchers have found that only 30 individuals of this subspecies now exist.


Primates in general are a very social order; Brown Spider Monkeys are as well. Males of this species travel in all-male groups and women with their dependent offspring. However, it is also common for these primates to travel and forage alone. Often, the species will sleep in a tree that is a fruit tree or relatively near one. This allows them to not travel very far the next day to get their food. When they leave the tree to go to a watering hole, the group will enlarge so that some can watch for predators while others enjoy a nice, cool drink of water.


Though their range of location varies, Brown Spider Monkeys spend most of their time in the highest levels of the forest. When travelling, most of their time is spent swinging from tree limb to tree limb, rather than walking or running on all fours. For meals, the mature parts of the fruit are consumed. Small leaves, flowers, insects, tree bark, and many more are used as a food source as well. This species play an important role in the environment, because they are major seed dispersers.

Though they live in groups of 20-30, they are rarely seen together. The females that are mothers will have a specific area that she remains in with her young until they have matured. As researchers have studied Ateles Hybridus for many years, they are scarcely seen in association with other primates.

Causes Leading to Extinction

Researches say that only 30 more individuals of this subspecies now are found in the wild. Our every day actions play into the part of why this sub-species is close to endangered. Residential and Commercial Development is a major role into extinction. Agriculture, aquaculture, Transportation and service corridors, and biological resource use are all threats to these remaining individuals.

Conservation Actions

It is our goal to protect Brown Spider Monkeys; It is time for their population to grow again. Actions to stop these threats include; Species management, Land/water management, Land/water protection, Education and awareness to the world.

It is YOUR time to take a stand. Thousands among thousands of species are critically endangered. Perhaps this is your chance to donate and help save these species.


Thunstorm, M. "Ateles Hybridus (brown Spider Monkey)." Animal Diversity Web. N.p., 2009. Web. 18 Feb. 2016.

Urbani, B., Morales, A. L., Link, A. & Stevenson, P. 2008. Ateles hybridus. The IUCN Red List of Threatened Species 2008: e T29961A10280054. Downloaded on 18 February 2016.