Pheidole rugulosa
Mojave National Preserve, California, USA

photograph © Alex Wild 2004

Pheidole ants are strikingly dimorphic.  Major workers have large heads and strong mandibles for cracking seeds and cutting up large food items.  Here is a major worker of Pheidole rugulosa at the nest entrance.

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, using a Canon 65/2.8 MPE 1-5x Macro lens.