NW Indiana Sugar Maple Borer?
From NW Indiana again, and saw this guy doing a backstroke in the pool. As I usually try to give everyone a fair shake, I rescued him and got a few quick pics before he headed off. Now I review the site and it looks like this guy may be a Sugar Maple Borer; if so was I too quick in releasing him? By your description this may be one of the more harmful beetles in an area and its discovery may be of some concern…
Right family, wrong species. This is a Locust Borer. Grubs bore in the wood of black locust trees and pollen and nectar feeding adults are often found on goldenrod. Adults emerge in the fall.