White-chested Titi

The black titi monkey (Cheracebus lugens), is a species of titi, a type of New World monkey, from South America. It is found in Brazil, Colombia, and Venezuela. It was described in 1811 as Callicebus lugens. It is sometimes called the widow monkey. == Distribution == This species has the largest range of the Cheracebus species, ranging from the Branco River and Rio Negro north to the Orinoco and Caqueta river basins. The species has been observed on the left bank of the Guayabero River,, where it was collected in 1959 by Jorge Hernández Camacho, both in La Macarena National Park, and recently it was observed by the Colombian biologist Rocío Palanco north of the Guayabero above La Cordillera de los Picachos National Park. The species is found in the Vichada selva between the Vichada and Guaviare Rivers and the northernmost Colombian population extends north of the Vichada River, reaching the middle Tomo River, where it probably extends to the upper Tomo, although this needs to be confirmed. The black titi is not found on the lower Tomo or lower Tuparro River nor on the north bank of the lower Vichada River, contrary to the distribution map of Hershkovitz. This…