Duelling stalk-eyed flies (IMAGE) Frontiers Caption Duelling stalk-eyed flies. Image by Gerald Wilkinson. Credit Gerald Wilkinson Usage Restrictions Image owned and provided by the authors and must be credited to Gerald Wilkinson. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.