Konrad Wothe / Leafcutter ants (Atta cephalotes) carrying leaves and filaments along a trail, Panguana Reserve, Huanuco Province, Peru.

Konrad Wothe / Army ants (Eciton burcellii) carrying eggs on a trail in a rainforest, Panguana Reserve, Huanuco Province, Peru.

Ingo Arndt / Green tree ant (Oecophylla smaragdina) group on entrance from nest, built from woven leaves, Northern Territory, Kakadu National Park, Australia.

Ingo Arndt / Black garden ants {Lasius niger} feeding on cricket Germany, Europe

Konrad Wothe / Chimpanzee (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzee (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, with a baby in the background, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzee (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzees (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, Mahale Mountains National Park, Tanzania.

James Dunbar / Leaf cutter ants (Atta sp.) communicating. Guadeloupe National Park, Guadeloupe, Leeward Islands.

Alex Hyde / Leaf-cutter ant (Atta cephalotes) carrying pieces of leaf that they have harvested back to their underground fungus garden in their nest, Osa Peninsula, Costa Rica

Alex Hyde / Leaf-cutter ants (Atta cephalotes) carrying pieces of leaf that they have harvested back to their underground fungus garden in their nest, Osa Peninsula, Costa Rica. Photographed in mobile field studi...

Alex Hyde / Leaf-cutter ants (Atta cephalotes) carrying pieces of leaf that they have harvested back to their underground fungus garden in their nest, Osa Peninsula, Costa Rica. Photographed in mobile field studi...