Linepithema humile and Pogonomyrmex subdentatus
Davis, California, USA

photograph © Alex Wild 2003

Argentine ants, an aggressive pest species introduced by human commerce to California, attack a native harvester ant.  Native ants in many places around the world have disappeared in areas invaded by Argentine ants.

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.