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Alouatta belzebul, or red-handed howler monkeys, are found in Amazonian Brazil and surrounding regions, including the states in north-east Brazil (south Amapá, Maranhão, Pará, Tocantins, and Sergipe) and states in the Atlantic forest region (Pernambuco, Rio Grande do Norte, Piauí, Alagoas, and Paraíba). Islands in the Amazon estuary (Marajó, Mexiana, and Caviana) are also home to A. belzebul. While the range of this species may extend into the lower Amazon as well, it is poorly understood and often confused with that of Alouatta discolor. The presence of Alouatta belzebul has been confirmed east of the Xingu and Iriri rivers and in the Rio Pracupy, Portal.
Biogeographic Regions: neotropical (Native )