Camponotus sansabeanus
Mojave National Preserve, California, USA

photograph © Alex Wild 2004

Continuous size polymorphism among workers in a nest of Camponotus sansabeanus.  Workers differ not only is size alone but in proportion- the head of the largest worker is much larger in proportion to its body than that of the smallest worker. 

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.