http://www.nyis.info/index.php?action=invasive_detail&id=24 NY Invasive Species Clearinghouse http://www.nyis.info/index.php?action=invasive_detail&id=24 Hemlock Wooly Adelgid http://www.nyis.info/index.php?action=invasive_detail&id=24 webpage on the Hemlock Woolly Adelgid NY Invasive Species Clearinghouse http://www.nyis.info/index.php?action=invasive_detail&id=24 New York Invasive Species Information Hemlock Woolly Adelgid Woolly Adelgid Species Information