Asian Citrys Psyllid (IMAGE) Entomological Society of America Caption The Asian citrus psyllid (Diaphorina citri) carries a bacterial pathogen that causes citrus greening disease (huanglongbing), which is destroying trees in many countries and states, including Florida. Credit David Hall 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.