Guam Psyllid (IMAGE) University of Guam Caption Guam's native psyllid is an insect that feeds on the increasingly rare Intsia bijuga tree. Credit Aubrey Moore 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.