The Kipunji (Rungwecebus kipunji), also known as the Highland mangabey, is a new species of Old World monkey native in the highland forests of Tanzania. The kipunji has a unique call, described as a "honk-bark", which distinguishes it from its close relatives the Grey-cheeked mangabey (Lophocebus albigena) and the Black crested mangabey (Lophocebus aterrimus), whose calls are described as "whoop-gobbles". Though it was originally thought to be a member of the Lophocebus genus genetic data later placed it as its own separate genus Rungwecebus. The kipunji is the first new monkey genus to be discovered since Allen's swamp monkey in 1923.