Red Postman Butterfly (image) University of Colorado at Boulder Caption A new CU-Boulder study led by doctoral student Tobin Hammer has shown the internal microbial make-up of the red postman butterfly changed dramatically from caterpillar to pupa to adult. This is the first time researchers have ever sequenced the entire microbiome of a butterfly. Credit Tobin Hammer, University of Colorado 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.