The human pubiclouse, on the other hand, is related to the gorilla louse, from which it parted company some 13 million years ago.
而体虱与大猩猩虱子有关系,1千3百万年前与大猩猩虱子分道扬镳。
2
So biologists have long been puzzled over the fact that the human head louse is a sister species to the chimpanzee louse, but the pubiclouse is closely related to the gorilla louse.