<i>Pediculus schaeffi</i> under a light microscope
photo by Vincent S. Smith
CC BY 2.5
From: Genetic Analysis of Lice Supports Direct Contact between Modern and Archaic Humans  Reed DL, Smith VS, Hammond SL, Rogers AR, Clayton DH PLoS Biology Vol. 2, No. 11, e340 <a href="//doi.org/10.1371/journal.pbio.0020340" class="extiw" title="doi:10.1371/journal.pbio.0020340">doi:10.1371/journal.pbio.0020340</a>