NISAW: Help Track a Hemlock Pest
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NISAW: Help Track a Hemlock Pest
*"Hemlock woolly adelgid is "**"on the move in Maine"* [ [link removed] ]*". Help us track its spread."*
In 2024, keen-eyed community members spotted the insect in towns it has not previously been detected: Liberty and Parsonsfield.
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hemlock woolly adelgid on a hemlock twig
Image: Hemlock woolly adelgid (HWA) is visible on the underside of hemlock twigs in the winter. Photo: Maine DACF
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Hemlock woolly adelgid (HWA) is an aphid-like invasive insect that feeds on and can kill hemlock trees in Maine. To find HWA [ [link removed] ], look:
* On hemlock trees [ [link removed] ]. In North America, HWA is found only on hemlock trees.
* On the undersides of hemlock twigs. At this time of year, HWA is covered in white tufts of wax and is easy to see. Look for discrete ‘woolly’ masses.
* At fallen twigs on top of the snow, as this will give you a picture of what is happening high in the crown.
Unless you are in an area where HWA is commonly found (such as southern coastal towns), please let us know if you find it [ [link removed] ].
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hemlock woolly adelgid detections by town in Maine through 2024
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