Glowing Genitalia of <em>P. caddo</em> (IMAGE) Field Museum Caption The glowing gonopods of <em>P. caddo</em> under UV light. Credit (c) Stephanie Ware, Field Museum Usage Restrictions Please include credit line: (c) Stephanie Ware, Field Museum 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.