EditorialPulex, Print, Pulex is a genus of fleas. It comprises six species. One is the human flea (P. irritans), and the other five are confined to the Nearctic and Neotropical regions.
EditorialHuman flea, Pulex irritans 1, and human louse, Pediculus humanus 2. Handcoloured copperplate engraving from Friedrich Johann Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1795.