Reports of Lymantria dispar caterpillars (gypsy moth) are emerging across the eastern part of the U.S. as spring springs forth and temperatures rise. Portions of Massachusetts, Pennsylvania and Rhode Island are experiencing an increase in the caterpillar population for the third year in a row, and the North American Plant Protection Organization’s Phytosanitary Alert System has reported that the USDA’s Animal and Plant Health Inspection Service has added Wythe County in Virginia to its list of regulated areas for gypsy moth.

In Kendall County, Illinois, trees are being aerial sprayed along the Fox River, and the state Department of Ag in LaSalle County has begun spraying near Starved Rock State Park. Fifty of Wisconsin’s 72 counties are under quarantine for the pest.