Spotted Lanternfly inSnyder County, PASPOTTED LANTERNFLY GUIDE

Snyder County — confirmed for SLF in 2018 — is one of the smallest-population counties in central Pennsylvania, with approximately 40,000 residents in a compact agricultural valley between two parallel Appalachian ridges. Middleburg, the county seat, sits at the center of a landscape where the North Branch Susquehanna River and its tributaries drain the broad valley floor farmland toward the larger Susquehanna corridor to the north. PA Route 522 serves as the primary north-south transport artery, connecting Snyder County to Union and Mifflin counties and providing a vehicle corridor for SLF spread through the ridge-and-valley landscape. The county's proximity to Bald Eagle State Forest adds both ecological diversity and monitoring complexity as SLF populations establish in this densely agricultural but sparsely populated central Pennsylvania county.