(IMAGE) Karlsruher Institut für Technologie (KIT) Caption In the weevil's hip joint, large skeleton parts move relative to each other and interlock like a screw and a nut. Credit Image: dos Santos Rolo et al., <i>PNAS</i>, 2014 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.