Oak tatters is a disorder that primarily affects white oaks, but also is observed on hackberry trees. Leaves of affected trees lose the majority of interveinal leaf tissue, resulting in a leaf ‘skeleton' (Figure 1). The phenomenon was first reported in the early 1980’s, and has been observed in many Midwestern states. The number of trees affected varies widely from year to year, with a much higher level of incidence in 2017 than normal. The disorder occurs in both rural and urban areas and may affect single trees and those in woodlands. Symptoms usually are distributed uniformly throughout the tree, rather than being more severe on one side as usually occurs with herbicide drift.