Thistle Tortoise Beetles (Cassida rubiginosa) Having Sex (image) Kiel University Share Print E-Mail Caption Using the very distinctive sexual organs of male and female thistle tortoise beetle (Cassida rubiginosa), researchers at Kiel University have now been able to investigate the mechanics of the beetle reproductive organs for the first time. Credit Copyright: Dr. Yoko Matsumura Usage Restrictions The image may only be used with appropriate caption or credit. 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.