Exotic Pest Reporting
Robert L. Anderson, USDA Forest Service, Bugwood.org
Hemlock woolly adelgid
Hemlock woolly adelgid (Adelges tsugae) is an insect pest of hemlock trees. It is a native of Asia and was first detected in the East Coast in the 1950's.
Though introduced into the Western U.S. in the 1920's it is not considered a pest there. It is killing hemlock in the east and has spread throughout the Appalachian Mountain areas and into the Midwest.
Summaries of State Plant Protection Laws and Regulations
07/25/2017 - Hemlock wooly infests Lake Michigan's shoreline
07/17/2017 - Agencies work to educate about invasive species
08/18/2015 - Hemlock tree-killing pest discovered near Holland
05/22/2015 - NAPPO Phytosanitary Alert System
08/13/2014 - Exotic Forest Insects - MSU Extension
08/06/2014 - Volunteers Sought For Hemlock Woolly Adelgid Survey
04/30/2014 - Winter Toll on Insects and a Bird
04/25/2014 - What is Threatening the Original Vermonter?
04/17/2014 - Hemlock tree losses inevitible
04/17/2014 - The Balance
04/02/2014 - A beetle imported to help save hemlock trees
04/02/2014 - Fight to save Southeast hemlocks takes new tack
04/02/2014 - Invasive tree-killer found in three more counties
03/14/2014 - LHS students participate in hemlock survey
03/03/2014 - Cold could slow spread of hemlock tree pest
02/17/2014 - Battle for forests against pests wages on
01/10/2014 - 3rd landmark Pa. forest hit by invasive pest