If you’ve noticed small holes in the leaves of your oak tree this season, it may be due to a pest called the Oak Shothole Leafminer (Japanagromyza viridula). While this pest, which is actually a small fly, is native to New Jersey and has natural predators, there are occasionally large outbreaks that can lead to widespread oak tree damage. The fly is becoming more common throughout New Jersey and the New Jersey DEP is currently tracking outbreaks of the pest. What exactly is the Shothole Leafminer, and how does it affect oak trees? Read on to find out!