<i>Melolontha hippocastani</i> larva (IMAGE) Max Planck Institute for Chemical Ecology Caption This shows forest cockchafer larva feeding on a carrot. Cockchafer larvae (grubs) feed underground on the roots of trees during their three- to five-year larval stage. Credit MPI for Chemical Ecology/Arias Cordero 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.