Asian Citrus Psyllid (IMAGE) University of California - Riverside Caption The Asian citrus psyllid, seen here, is an efficient vector of a bacterium that causes a lethal citrus disease. Credit Mike Lewis, CISR, UC Riverside. 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.