Acorn Weevil Beetle (IMAGE) Proceedings of the National Academy of Sciences Caption An acorn weevil beetle (Curculio sp.) stands on a sunflower (Helianthus sp.). Credit Image courtesy of Duane D. McKenna. Usage Restrictions None 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.