A Representative Individual from the Soldier Caste of the New World Army Ant Species <i><a href="//commons.wikimedia.org/wiki/Eciton_burchellii" title="Eciton burchellii">Eciton burchellii</a></i> with Characteristically Shaped Mandibles.
Illustration by Nathalie Escure.
CC BY 2.5
Delsuc F: <i>Army Ants Trapped by Their Evolutionary History.</i> PLoS Biol 1/2/2003: e37. <a rel="nofollow" class="external free" href="https://dx.doi.org/10.1371/journal.pbio.0000037">https://dx.doi.org/10.1371/journal.pbio.0000037</a>