Formica gnava
Mojave National Preserve, California, USA

photograph © Alex Wild 2004

Two workers from neighboring colonies of Formica gnava, fighting.  The ant on the right has tucked her gaster forward in order to smear formic acid on the antennae of her opponent.

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.