Monarch Caterpillar (IMAGE) University of Michigan Caption In this image, a common milkweed (Asclepias syriaca) is being eaten by a monarch caterpillar (Danaus plexippus). Credit Rachel Vannette 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.