a common African guenon with greenish-brown upper parts and a black face 黑长尾猴。 比较 green monkey, grivet
Cercopithecus aethiops, family Cercopithecidae, in particular the race C. a. pygerythrus of southern and eastern Africa 拉丁名Cercopithecus aethiops,猴科,尤指非洲南部和东部的黑长尾猴