Invasive Cycad Scale (image) University of Guam Share Print E-Mail Caption Tiny cycad aulacaspis scale insects feed on leaf surfaces of Guam's endemic cycad plant. Credit University of Guam file photograph. Usage Restrictions None Share Print E-Mail 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.