Fran?ois' langur

Fran?ois' langur (Trachypithecus francoisi), also referred to as Francois' leaf monkey, Tonkin leaf monkey, or white side-burned black langur, is a species of lutung and the type species of its species group. The species is distributed from southwestern China to northeastern Vietnam. The preferred habitat of Fran?ois' langur is a karst topography; limestone cliffs and caves of tropical and subtropical zones. (Xinhua/Wu Xin)