Spotted Lanternfly inMonroe County, NYSPOTTED LANTERNFLY GUIDE

Monroe County — home to Rochester, New York's third largest city — confirmed SLF in 2022 as populations expanded westward along the I-90 New York State Thruway corridor from the established Central New York zone. Rochester is the Flower City, known for its extensive park system designed by Frederick Law Olmsted and a mature urban tree canopy that provides both ecological character and abundant SLF host habitat. The Genesee River gorge cuts through the heart of the city and Rochester's park system, creating a natural SLF dispersal corridor from the southern hill country northward to Lake Ontario. Monroe Community College and the University of Rochester campus are active monitoring sites as SLF range expands along the I-90 corridor through the Finger Lakes region toward the western New York frontier.