A Male of the Diving Beetle Grapoderus zonatus (image) Faculty of Science - University of Copenhagen Share Print E-Mail Caption A male of the diving beetle Grapoderus zonatus. The species has been trapped in an evolutionary standstill due to mating conflicts between males and females. Credit © Niels Sloth/Biopix Usage Restrictions None Share Print E-Mail 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.