Yes, Carolina, it is a mantled howler of Central America(Alouatta palliata)...the other species, the Yucatan black howler (Alouatta pigra) used to be considered the same species.
I'm not sure about the ID suggested. Howler monkeys belong to genus Alouatta, and the Alouatta belzebul is native to Brazil.
Maybe a Golden-mantled howler based in color and location.
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