A nest of Veromessor pergandei. Mojave National Preserve, California, USA
A nest of Pheidole in the dry chaco. Mcal. Estigarribia, Boquerón, Paraguay
A nest of the miniature predator Pyramica rostrata in an Illinois forest. Notice how the ants have enclosed their space by building a circular wall around the colony. Vermillion River Observatory, Illinois, USA
