Male Diachasma Alloeum on an Apple (IMAGE) University of California - Davis Caption This is male Diachasma alloeum on an apple. The wasp is undergoing evolutionary change. Credit Photo by Andrew Forbes Usage Restrictions Photo by Andrew Forbes License Licensed 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.