Magnolia Scale can affect all types of magnolias but the Star and Saucer magnolia are the most commonly affected. Scale have sucking mouthparts that extract fluid from the stems and branches. A high population can cause dieback of branches and stems, while a severe outbreak of scale can cause tree death.
Pine Engraver is a type of bark beetle that attacks White pines among other pines in Illinois. The beetles attack stressed and nearby healthy pines. After boring into the tree, the beetle infects the pine with the blue stain fungus, which in turn kills the healthy trees.