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
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
Mycetosoritis hartmanni in their subterranean fungus garden.  The fungus- a white stringy material- grows between the bits of debris fed to it by the ants.  The ants then feed from the fungus- a true agricultural system.

Smithville, Texas, USA
Mycetosoritis hartmanni in their subterranean fungus garden.  The fungus- a white stringy material- grows between the bits of debris fed to it by the ants.  The ants then feed from the fungus- a true agricultural system.

Smithville, Texas, USA
A half meter underground, a small colony of Mycesoritis hartmanni cultivates their fungus in a garden hung from the chamber ceiling.

Smithville, Texas, USA
Mycetosoritis hartmanni nest, cutaway of the soil to reveal a pair of golf ball-sized fungus gardens.

Smithville, Texas, USA
The intricate galleries of a fungus garden of Mycetosoritis hartmanni in a laboratory colony.

Texas, USA
Leafcutter ants make characteristic circular cuts. Here an ant completes the curve. (Atta cephalotes)

Captive colony at the University of Texas
A busy highway of Atta cephalotes leafcutter ants carrying their bounty back to the nest.

Gamboa, Panama
A half meter underground, a small colony of Mycesoritis hartmanni cultivates their fungus in a garden hung from the chamber ceiling.

Smithville, Texas, USA
A half meter underground, a small colony of Mycesoritis hartmanni cultivates their fungus in a garden hung from the chamber ceiling.

Smithville, Texas, USA
A half meter underground, a small colony of Mycesoritis hartmanni cultivates their fungus in a garden hung from the chamber ceiling.

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