Complex sentence: The human parasite diverged from "Pthirus gorillae" approximately 3.3 million years ago, and is more distantly related to the genus "Pediculus", which contains the human head and body lice.
Split into simpler sentences: The human parasite diverged from "Pthirus gorillae" approximately 3.3 million years ago. Itis more distantly related to the genus "Pediculus", which contains the human head and body lice.