The Emerald Ash Borer is on Michigan's Invasive Species watch list and is prohibited. It is a bright, metallic green beetle with purple segments under its wings. They grow to be about 1/2 inch in length and have worm-like lavae. They leave D-shaped holes in trees they have infested.
The Emerald Ash Borer has killed tens of millions of ash trees in Michigan since it was first discovered in 2002. On their own, they only fly about 1/2 mile. The biggest threat is when they are moved accidentally by people. DO NOT MOVE FIREWOOD!
It is no longer necessary to report sightings of the Emerald Ash Borer in Michigan. If you think you have an infestation, contact a local arborist.