As if we don’t already have enough trouble with the woolly adelgid, the asian longhorn beetle and their ilk. Be on the lookout for the Emerald Ash Borer.

First found in Detroit in 2002, it had made its way from Asia to North America somehow, though no one is quite sure how.

While the adults munch on the leaves of ash trees and so don’t do much harm, their larvae bore into the inner bark, blocking the flow of water and nutrients. A hundred percent of the infected trees die. Millions of ash trees in the Midwest have been destroyed. The beetles have been found in New York State and parts of Canada. Vermont officials have set out traps, hoping to catch the invasion early.

It will mean destroying thousands of trees, just as in the fight against the asian longhorn beetle.