mexican black howler monkey chapultepec zoo

mexican black howler monkey chapultepec zoo
alouatta pigra, mother and offspring. Few zoos exhibit this species, so it is good to see them now reproducing at chapultepec.

Are these Guatemalan black howler (Alouatta pigra) or Mexican howler monkey (Alouatta palliata mexicana)? Are the howlers at XCaret the same species?

Actually, since chapultepec recieves many animals confiscated from the illegal pet trade by semarnat, the zoo has both palliata and pigra. Let me check on my next visit if they still have both species on exhibit or only one. Xcaret has aloutta pigra, which is called mono aullador yucateco in Mexico. Zoomat in chiapas also has both palliata and pigra.