Donacia Bicolor (IMAGE) Johannes Gutenberg Universitaet Mainz Caption The preferred food source of the reed beetle Donacia bicolor is the common bur-reed plant. Credit photo/©: Martin Kaltenpoth Usage Restrictions This image may only be used in connectinn with the press release "Versatile symbionts: Reed beetles benefit from bacterial helpers through all life stages", issued by Johannes Gutenberg University Mainz on June 12, 2020. 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.