The brown-spider monkey (Ateles hybridus), is considered one of the top 25 threatened primate species of the world. The species resides in two separate populations on either side of the Magdalena River in central Colombia partially within the Eje Cafetero landscape. Each population represents a different subspecies: A. hybridus hybridus living on one side of the river A. h. brunneus on the other.
Although both subspecies are in danger of extinction, A. h. brunneus was most at risk because no national protected areas contained populations of this uniquely Colombian primate until this recent discovery.

“This exciting discovery of brown spider monkeys in Selva de Florencía National Park emphasizes the importance of protected areas to safeguard wildlife – even for previously unknown species,” said Julie Kunen, WCS Director of Latin America and Caribbean Programs. “The fact that the species was found in a protected area gives conservationists hope that populations will be safeguarded and can perhaps even grow in number.”

When Selva de Florenica was created as a national park in 2005, the only known evidence of A. h. brunneus was a captive specimen living with colonists in the park. Subsequent studies conducted by WCS, Regional Autonomous Corporation of Caldas, Universidad de Caldas, Universidad Nacional, ISAGEN, and Instituto Humboldt were unable to record the species living in the area; therefore it was considered most likely extinct in the area. 

In early November of last year, a local farmer in the village of El Silencio reported the possible presence of the species, setting into motion a rapid exploration of the area by officers of the National Parks Unit and researchers from WCS. At least two individual brown-spider monkeys were observed, making Selva de Florencia National Park the only national protected area that currently protects this subspecies. 

Unfortunately, Selva de Florencia National Park is located in the southernmost area of the species’ range, thus its population is even more vulnerable to extirpation. To ensure the continued conservation of the brown spider monkey in Colombia, next steps will be a rigorous evaluation of the population status of the species in this park and restoration of degraded habitat to provide connectivity with other northern populations currently being studied by WCS.

The Wildlife Conservation Society’s Colombia program, funded in part by the U.S. Fish and Wildlife Service’s Wildlife Without Borders, focuses primarily on conserving central Andean ecosystems and their wildlife, particularly in the mid-portion of the central and western Andean cordilleras and the Cauca River Valley that flows between them. To help build capacity in the region, WCS helps train young conservation professionals and works with governmental and non-governmental organizations, as well as local communities, to implement effective conservation. Additionally, WCS provides technical assistance to conservation initiatives at the national, regional, and local levels.

The Wildlife Conservation Society saves wildlife and wild places worldwide. We do so through science, global conservation, education and the management of the world's largest system of urban wildlife parks, led by the Flagship Bronx Zoo. Together these activities change attitudes toward nature and help people imagine wildlife and humans living in harmony. WCS is committed to this mission because it is essential to the integrity of life on Earth. Visit: www.wcs.org