An Army of Beetles Could Save Dying Hemlock Forests

Researchers here are hatching a plan to stop the woolly adelgid. A 1-acre plot of forest is the site of a budding insectary, a farm in the trees of the predator beetle Laricobius nigrinus that has been shown in some cases to kill the adelgid.

Source: An Army of Beetles Could Save Dying Hemlock Forests – Scientific American