With the arrival of the homo sapiens, the hair coat of our body dropped and the lice, tose invadors sensitive to the cold, split up in three "tribes": head hair lice, body hair lice and pubic hair crab lice.

This invador has been reportet present during all centuries, on all continents and in every time zone. Today, up to 4000 year old mummies, true witnesses of the life and customs of their contemporaries, play an important role for research.