The hemlock woolly adelgid, native to Asia, was discovered in Virginia in 1951.
From the sacbee.com
The hemlock woolly adelgid is host specific, meaning it only infests hemlock trees.
From the sciencedaily.com
Certain times of year you can see the woolly characteristics of the adelgid.
From the newsobserver.com
It also looks for trees that might be bred into an adelgid-resistant race of hemlocks.
From the sacbee.com
As long as we cannot see the evidence of the adelgid, we don't take action.
From the newsobserver.com
The balsam woolly adelgid, a tiny sucking insect, has caused widespread mortality in forests.
From the sacbee.com
Two key differences make the hemlock adelgid an even worse invader.
From the sacbee.com
Also near Mount Adams, another pest called the balsam woolly adelgid has complicated the scenario.
From the thenewstribune.com
So far, only extreme cold stops the hemlock woolly adelgid.
From the sciencedaily.com
More examples
Any of various insects that feed and form galls on conifers
The Adelgidae is a small family of the Hemiptera closely related to the aphids, and often traditionally included in the Aphidoidea with the Phylloxeridae. Adelgids are often known as "woolly conifer aphids". ...
Aphidlike insect of the family Phylloxeridae that feeds on the bark and needles of conifers.
Either of two aphids (genus Adelges) with a white woolly coating that have been accidentally introduced into North America. See article on Wooly Adelgid.