The gypsy moth is a non-native, invasive species that has been advancing across Ohio. Fifty-one of Ohio's 88 counties have established populations. In its caterpillar stage, it will feed on the leaves of over 300 different tree and shrub species and is especially fond of oaks.
Currently the gypsy moth is in the caterpillar stage as seen below. Its feeding activity is becoming more obvious as leaves are being consumed and their frass (insect excrement) is raining from the canopy where the tree-feast is occurring.