The worst enemies of ants are often other ants. Here, a Rhytidoponera victoriae scout (at left) has discovered an Stigmatomma ferruginea worker and attempts to wrestle it back to her nest. If successful, she will kill the Stigmatomma and feed her to the larvae. Stigmatomma is too specialized as an underground predator to be good at general fighting, so is at a disadvantage here.
Diamond Creek, Victoria, Australia