Range Description

Alouatta sara is believed to occur only in Bolivia. Anderson (1997) gives a range extending from the Department of Pando south along the Andean Cordillera and east into central Bolivia including the entire basin of the Río Beni and east as far the Mamoré-Guapore. Its sympatry with Alouatta caraya over a large part of its range east of the Río Beni is poorly understood, but the indications are that there may be some subtle, but distinct difference in habitat preferences, with A. sara prevailing in humid forest areas and seasonally flooded forest along major rivers (for example, igapó along the Río Iteñez) and A. caraya being found in drier, semdeciduous forest and gallery forest in areas of savanna and chaco (see for example, Wallace et al. 1998)