Cephalotes atratus
... that a colony of the arboreal ant Cephalotes atratus used their heads to repel a column of army ants?
... that a colony of the arboreal ant <i id="mwCY0"><b id="mwCY4"><a href="./Cephalotes_atratus" id="mwCY8" rel="mw:WikiLink" title="Cephalotes atratus">Cephalotes atratus</a></b></i> used their heads to repel a column of <a href="./Army_ant" id="mwCZA" rel="mw:WikiLink" title="Army ant">army ants</a>?