Cephalotes pusillus - turtle ant, major worker. The deep recesses on the head (the "scrobes") allow the ant to fully retract her delicate antennae. Carrancas, Minas Gerais, Brazil
Cephalotes varians, turtle ant soldier. The bizarre disc on the head is used as a living door to block the nest entrance. Florida Keys, USA
Cephalotes varians turtle ant soldier showing the head disk used for guarding nest entrances. Florida Keys, USA
