(BG) Locust Borer (Megacyllene robiniae) 2016-10-1 Newark, DE

First seen on 9/27. It worked on the same frond of the same inflorescence (flower head) for almost a week when, on the last day or two, it moved over to another plant next to it. It stayed around till the 3rd or 4th of the month. I'll have to look really hard for a Black Locust tree, haven't noticed a Locust of any kind in the neighborhood.
http://bugguide.net/node/view/1302811/bgimage