Mark Moffett / Amazon Ant (Polyergus sp) group returning to their home nest at the conclusion of a slave raid, grey slave ant carries one of their pupa, near Lake Tahoe, California

Pete Oxford / Aetalionid Treehopper (Tropidaspis sp) with ants harvesting their honeydew, Tiputini Biodiversity Station, adjacent to Yasuni National Park, Amazon, Ecuador

Mark Moffett / Amazon Ant (Polyergus sp) female worker positioning mandibles to pierce the head of an ant from an alien nest, Sagehen Creek, California

Murray Cooper / Ant (Formicidae) carrying egg, Amazon, Ecuador

Murray Cooper / Ant (Formicidae) workers tending to eggs, Amazon, Ecuador

Murray Cooper / Leafcutter Ants (Atta cephalotes) carrying leaves, Amazon, Ecuador

Murray Cooper / Leafcutter Ant (Atta cephalotes) group carrying leaves, Amazon, Ecuador

Murray Cooper / Treehopper (Tragopa sp) group being guarded by Ants (Formicidae), Amazon, Ecuador

Murray Cooper / Treehopper (Tragopa sp) group being guarded by Ants (Formicidae), Amazon, Ecuador

Mark Moffett / Amazon Ant (Polyergus sp) group at the advancing end of a slave raid, Sagehen Creek, California

Nick Gordon / Ant garden showing profusion of plants growing up in tree including Bromeliads, all planted by (Camponotes) ants, Amazonia, Brazil

Nick Gordon / Ant garden in Mollia tree; seeds from which plants in "garden" grow are brought up to the nest by the ants themselves, Amazonia, Brazil

Doug Wechsler / Liana and ant nest hanging down from tree, interior view of tropical rain forest, Ecuador, South America

Solvin Zankl / Ant cleaning itself {Formicidae} Amazonia, Brazil

Pete Oxford / Leafcutter ants carrying leaves, Amazon, Ecuador.

Pete Oxford / Army Ant (eciton sp) group carrying pupae, Yasuni National Park, Amazon Rainforest, Ecuador

Pete Oxford / Army Ant (eciton sp) group carrying pupae, Yasuni National Park, Amazon Rainforest, Ecuador

Pete Oxford / Sac Fungus (Cordyceps sp) parasitizing ant, Yasuni National Park, Amazon Rainforest, Ecuador