Pseudomyrmex peperi is an obligate Acacia inhabitant. Here, a worker gathers a lipid-rich Beltian body from a leaf tip. The plant feeds the ants in exchange for protection from herbivores and competing plants.

Armenia, Belize
Crematogaster sp. tending to whitefly nymphs under a bamboo sheath.

Icononzo, Tolima, Colombia
Antennae wave about over a grazing herd of Cerastipsocus bark lice.

Los Reartes, Córdoba, Argentina
Dolichoderine ants are high-energy insects. The Azteca ants that rule tropical rainforest canopies, for example, get many of their carbohydrates from relationships with honeydew-producing scale insects.

Jatun Sacha, Napo, Ecuador
Camponotus foragers often travel in small packs. Here, a hunting party wanders across a patio floor at night.

Icononzo, Tolima, Colombia
Formica montana tending Publilia treehopper nymphs for honeydew.

Lake Forest, Illinois, USA
An Acropyga goeldii worker carries a mealybug.

Viçosa, Minas Gerais, Brazil
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
Formica montana tending Publilia treehopper nymphs for honeydew.

Lake Forest, Illinois, USA
Formica montana tending Publilia treehopper nymphs for honeydew.

Lake Forest, Illinois, USA
Formica montana tending Publilia treehopper nymphs for honeydew.

Lake Forest, Illinois, USA
See photo in original gallery.
all images and text © Alex Wild 2001-2013