Flies

Photo Synthesis

Category archives for Flies

Competing for space on a fake walnut

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. Biologist Jeremy Davis uses these flies to study the interaction…