The Vieira’s titi monkey[1] (Plecturocebus vieirai) is a species of Titi, a New World Monkey species native to north-central Brazil. They have bright reddish-brown faces with yellowish cheek hairs.
- Their forehead has a thin blackened stripe (approx. 0.5 cm) contrasting with an agouti gray crown and slightly lighter than gray on the legs and arms.
- The ears are crown-shaped. The back and sides are agouti-grey, with the central region along the back reddish-brown, giving it a darker appearance than the sides; Outer parts of the limbs are agouti-grey, contrasting slightly with the back and sides.
- Extremities of the limbs (hands and feet) are whitish, contrasting with the agouti gray of the external parts of the limbs.
- The throat, thorax, abdomen, and inner limbs have a bright reddish-brown tint, similar to the side tint of the face. The tail is black, distally 10 cm (approx. ), and gray-white is noticeable.
