Acorn ant workers (Temnothorax curvispinosus) care for brood while the parasites (T. americanus) sit idly by. Urbana, Illinois, USA
A mixed colony of Temnothorax americanus (the acorn slave-raiding ant, dark brown) and its host, T. curvispinosus. Urbana, Illinois, USA
An acorn slave-raiding ant. The large head and strong jaws are useful during raids for overcoming the defenses of acorn ants. Urbana, Illinois, USA
