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Rhagoletis sp. Walnut Fly
Tephritidae
Arizona, USA

photograph © Alex Wild 2009

Two male Rhagoletis walnut flies joust on an artificial walnut in a lab cage at the University of Arizona. What's an artificial walnut? It's a painted ping pong ball. As long as the ball is the right color and shape, the flies apparently don't mind.

 
USA, Arizona: Lab animals at the University of Arizona.

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) myrmecos.net).  Most of the photographs on myrmecos.net 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 65/2.8 MPE 1-5x Macro lens.