Strategus sp. - Ox Beetles
Arizona, USA

photograph © Alex Wild 2006

Male (right) and female ox beetles, showing the strong dimorphism between the sexes.  Males use their impressive horns to fight each other over access to females.

USA AZ Pima Co.

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 20D, using a Canon 100mm 2.8 Macro USM lens.