Figures 1-4 from: Serrano-Villavicencio JE, Silveira LF (2019) Notes on Lagothrix flavicauda (Primates: Atelidae): oldest known specimen and the importance of the revisions of museum specimens. Zoologia 36: 1-6. https://doi.org/10.3897/zoologia.36.e29951

Figures 1-4 Lagothrixflavicauda (MNHN-ZM-MO-1901-1602) collected by G.A. Baër in September 1900 in the Hacienda Nuevo Loreto (San Martín – Peru): (1) complete skin; (2) close-up of the tail showing the diagnostic yellow-golden hairs surrounding the tail's digital patch; (3) close-up of the face showing the white circumbuccal patch; (4) original Baër's label of the specimen. Photographs provided by Jacques Cuisin (MNHN).