This is so, so, sooooo--not good. We looked at the white ash tree in our front yard today and noticed one branch that hadn't leafed out. It looked dead. I looked closely at the branch and noticed the characteristic and unmistakable half-moon bore holes. Ever since the borer had been found in a metro park nearby, we have been expecting to see it sooner or later. We were always hoping for later, of course.
Now we have to decide whether to try and save the tree by using a systemic chemical drench that is implicated in honeybee colony collapse disorder, or to just let the borer have its way and turn the tree into firewood. Not a happy choice.