The Sweetpotato Weevil, Cylas formicarius (Fabricius) (image) Entomological Society of America Share Print E-Mail Caption The sweetpotato weevil, Cylas formicarius (Fabricius), is the most serious pest of sweetpotato around the world, damaging sweetpotatoes in the field and in storage. Credit Dr. Gadi V.P. Reddy 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.