Formica integroides worker tending pine aphids. The ants obtain a large portion of their energy from symbiotic relationships with hemipterans such as these aphids. Sagehen Creek, California, USA
Formica montana tending Publilia treehopper nymphs for honeydew. Lake Forest, Illinois, USA
A Nylanderia worker tends to a scale insect for honeydew. Morretes, Paraná, Brazil
