Beetle with Device (IMAGE) Optica Caption Device used to carry out the direct reflectance measurements under normal incidence of non-polarized light on the elytron (forewing) of a beetle. The allowed displacements and rotations of the probe holder allow the researchers to focus the beam on the beetle’s elytron perpendicularly. Credit Photo courtesy Optics Express/University of Costa Rica. 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.