A Formica francoeuri field ant worker tending to the larva of a Great Copper butterfly (Lycaena xanthoides). The caterpillar produces secretions attractive to ants, and in turn the ants protect the caterpillar from predators and parasites. San Diego Co., California, USA
A Crematogaster acrobat ant worker tends eucalypt scale insects for honeydew. Harrietville, Victoria, Australia
Technomyrmex albipes - white-footed ant tending to a mealybug (Pseudococcidae) for honeydew. Cape Tribulation, Queensland, Australia
