Asian Citrus Psyllid Nymph (image) University of California - Riverside Caption This photo shows an Asian citrus psyllid nymph. Credit Mike Lewis, CISR, UC Riverside. Usage Restrictions None 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.