Green tree ants dismantle a Pheidole that wandered into their territory. Cape York Peninsula, Queenland, Australia
Formica pergandei (red) is a social parasite that kidnaps brood from other ant species to use as labor. Here, guards from a target Formica glacialis colony put up a tough enough fight that the kidnappers failed to breach the nest. South Bristol, New York, USA.
A kidnapper ant (at left) fights with guard from a Formica glacialis colony. South Bristol, New York, USA.
