Pheidole barbata
Carrizo Plain Nat'l Monument, California, USA

photograph © Alex Wild 2003

A major worker of Pheidole barbata. The large head of the major worker houses muscles that power the large, blunt mandibles, which are used for cracking seeds.

This image is copyrighted by the photographer and cannot be used without permission. To obtain permission to use this image, please email Alex Wild. (alwild (at)  Most of the photographs on are reduced from their original size and compressed for more efficient web transmission.  In some cases, higher quality versions are available.

This image was captured with a Canon EOS D60, with a Canon 65/2.8 MPE 1-5x Macro lens.