Balsam Woolly Adelgid (IMAGE) University of Washington Caption The first instar larva ("crawler") of the balsam woolly adelgid (Adelges piceae). Credit Gilles San Martin/Flickr Usage Restrictions Photo credit required. 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.