What is up with the locust trees?

I have had many calls the past few weeks regarding the bronzing of the locust leaves throughout Henderson County. The locust leafminer is primarily a pest of black locust. Adults skeletonize and eat holes in the leaves; whereas, larvae mine the tissue between the upper and lower-leaf surface (mining damage is the most destructive). Under outbreak conditions, whole hillsides turn gray or brown, often suggesting fall color change. Outbreaks of the locust leafminer are generally more spectacular than destructive. Control of the locust leafminer is generally not necessary.