Red wood ants prey on pestiferous insects and forest defoliators like spruce budworms. Another example of scramble competition is forest defoliators. Young larvae skeletonise leaflets, while older larvae are defoliators. It is also faced with other defoliators such as "Arsenura armida" and "Epitragus" "sp.". Larvae are defoliators and feed gregariously while young, often skeletonizing leaves.