What is "central chimpanzee"

n. black-faced chimpanzees of central Africa; closely related to eastern chimpanzees [syn: Pan troglodytes troglodytes]

The central chimpanzee or tschego (Pan troglodytes troglodytes) is a subspecies of the common chimpanzee (one of the closest living relatives to humans, along with the bonobo). It occurs mainly in Gabon, Cameroon, and the Republic of the Congo, but also, to a lesser extent, in other regions.