Distribution. Lower Amazonian Brazil S in Atelidae

Distribution. Lower Amazonian Brazil S of the Rio Amazonas in the states of Para (also on Mexiana, Caviana, and Marajo Is in the Amazon estuary), Maranhao, Tocantins, and Mato Grosso, crossing the rios Tocantins and Araguaia W as far as the Rio Xingu-Iriri, and isolated populations in NE Brazil in the coastal regions of the states of Rio Grande do Norte, Paraiba, Pernambuco, and Alagoas (it is probable that its distribution was once continuous through the states of Ceara and Piaui to the Amazonian population). Its southern distributional limits in Para coincide with the change from tall forest to open formations such as the cerrado (bush savanna), caatinga (xeric scrub), and the babassu palm (Orbygnia) forest.