Sap-sucking insects called hemlock woolly adelgids are draining the life from a common evergreen tree in the eastern United States. Since arriving from Japan in the 1950s, the tiny bugs have spread from Georgia to Maine—about half of the Eastern hemlock’s range. Once the bugs become well-established, the consequences can be grave. Areas with severe infestations can see up to 90 percent of hemlocks die within about ten years.

Read more: https://www.srs.fs.usda.gov/compass/2017/01/31/sap-sucking-bugs-threaten-hemlock-forests/