Callicebus caligatus (Wagner, 1842) . Arch. Naturgesch., 8:357.

TYPE LOCALITY: Brazil, Rio Madeira, Borba .

DISTRIBUTION: W Brazil, south of Rio Solimôes, from Rio Ucayali-Tapiche in Peru.

STATUS: CITES - Appendix II.

SYNONYMS: castaneoventris, usto-fuscus .

COMMENTS: Perhaps a synonym of cupreus, see Groves (1992).