Horned and Cyclops Beetle (IMAGE) Indiana University Caption Heads of horned and cyclopic beetles of the genus Onthophagus are shown. After knocking out the gene otd1, the cyclopic beetle (right) lost the horn but gained a pair of small compound eyes in the center of the head. Credit Indiana University Usage Restrictions Credit author 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.