Researchers at Grand Valley State University discovered spider webs effectively collect DNA from pests like hemlock woolly ...

The hemlock woolly adelgid, or HWA as it’s known, is an accidental arrival to the United States, potentially arriving on multiple shipments of infested plants from Japan in the early 20th century.

Left unchecked, this aphid will sap a hemlock of nutrients, weakening it, eventually killing it. And as a recent invasive first found in our area in 2010, HWA has no native predators.

An invasive aphid arrives. Years later, after our mountain forest oaks had been ravaged by the gypsy moth invasion, I returned to my childhood home and found my beloved hemlock trees under siege ...

(CBS DETROIT) - After seven counties report detections in west and northwest Michigan, an invasive insect is found in Washtenaw County. Hemlock Woolly Adelgid (HWA) is a small aphid-like bug that ...

Hemlock woolly adelgid target hemlock and fir trees. The pests are invasive, sucking, aphid-like insects causing trees to die. They are too small to be seen by the eye, but the damage is visible.

The DEC plans to treat about 40 acres of forest preserve hemlock trees in Saratoga County and about 40 acres in Warren County by spraying and injecting pesticides called imidacloprid and dinotefuran.

In the fall and winter, the adelgids cover themselves with a white, waxy coating for protection that appears as wool bundles the size of a pinhead at the base of hemlock needles. The aphid-like ...