Spotted Lanternfly inHuntingdon County, PASPOTTED LANTERNFLY GUIDE

Huntingdon County occupies a dramatic landscape of ridges and river valleys in south-central Pennsylvania, anchored by the Juniata River and home to Raystown Lake — Pennsylvania's largest lake entirely within state borders. SLF was confirmed here in 2023, driven by spread along the Juniata River corridor and the Norfolk Southern main line, both of which transect the county from east to west and provide continuous dispersal pathways from established infestation zones in Mifflin and Blair counties. Huntingdon Borough, the county seat, sits along the Juniata River and US-22, through which heavy freight traffic connects to the infested I-99/US-220 corridor to the north. Mount Union and the Lewistown border area in the eastern reaches border Mifflin County, where SLF populations have been confirmed since 2022, creating sustained pressure from the east. Orbisonia in the southern reaches borders Bedford County and lies along the historic East Broad Top Railroad corridor. Raystown Lake's extensive recreational draw — attracting boaters and campers from Philadelphia, Harrisburg, and other infested metros — represents an ongoing SLF introduction risk through transported vehicles and camping gear. The Pennsylvania Wilds DCNR forestland blocks adjoining Huntingdon County to the north constitute a sensitive forest ecosystem at risk: SLF establishment in these lands could degrade native hardwood forest composition, stress old-growth remnants, and compromise the wildlife habitat networks supporting species from black bear and wild turkey to native brook trout in pristine headwater streams of the Juniata watershed.