Formica subsericea field ant tending aphids on a milkweed leaf.

Urbana, Illinois, USA
Trachymyrmex arizonensis & Pyramica arizonica.  The minute Pyramica arizonica (at center) is found only inside nests of another ant species, the fungus-growing ant Trachymyrmex arizonensis. 

Sycamore Canyon, Arizona, USA
Podomyrma adelaidae tends to a Lycaenid caterpillar.  These caterpillars secrete substances that the ants find attractive, and the ants in turn provide protection from parasites.

Poochera, South Australia
Lasius (Acanthomyops) californicus citronella ants with their underground "cattle": mealybugs that produce honeydew.  

Mojave National Preserve, California, USA
Podomyrma adelaidae tends to a Lycaenid caterpillar.  These caterpillars secrete substances that the ants find attractive, and the ants in turn provide protection from parasites.

Poochera, South Australia
Trachymyrmex arizonensis & Pyramica arizonica.  The minute Pyramica arizonica (at center) is found only inside nests of another ant species, the fungus-growing ant Trachymyrmex arizonensis. 

Sycamore Canyon, Arizona, USA
Odontomachus bauri.  Trap-jaw ants are normally thought of as predators, but they also tend honeydew-producing insects.

Gamboa, Panama
Mycetarotes fungus garden in a lab nest.  Male ants, seen here as the winged, dark-colored individuals, perform no labor in the colony, serving instead to disperse the colonies' genes during periodic mating flights outside the nest.

Parque Nacional Iguazu, Argentina; Laboratory colony at the University of Texas
Mycetarotes fungus garden in a lab nest.  Male ants, seen here as the winged, dark-colored individuals, perform no labor in the colony, serving instead to disperse the colonies' genes during periodic mating flights outside the nest.

Parque Nacional Iguazu, Argentina; Laboratory colony at the University of Texas
Formica subsericea field ant tending aphids on a milkweed leaf.

Urbana, Illinois, USA
Formica subsericea field ant tending aphids on a milkweed leaf.

Urbana, Illinois, USA
Formica subsericea field ant tending aphids on a milkweed leaf.

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