Spotted Lanternfly

Spotted Lanternfly

Pest / Invasive (first found in Pennsylvania in 2014)

Spotted Lanternfly (SLF), Lycorma delicatula, is an invasive planthopper native to China, India, Vietnam. It was first discovered in Berks County, Pennsylvania and has rapidly spread since. This insect has the potential to adversely impact agricultural crops such as grapes, hops, and hardwoods. Spotted lanternfly can reproduce on many trees and shrubs; however, it has a preference for Tree of Heaven (another aggressive invasive species from China), facilitating its spread throughout the US. It is also reducing the quality of life for people living in heavily infested areas.


SLF threatens many crops and landscape plants including: Almonds, Apples, Apricots, Cherries, Grapes, Hops, Maple Trees, Nectarines, Oak Trees, Peaches, Pine Trees, Plums, Poplar Trees, Sycamore Trees, Walnut Trees, Willow Trees

Management activities:

PoPS is being used by the United States Department of Agriculture (APHIS) Plant Protection and Quarantine (PPQ) to understand where the pest is likely to spread and prioritize surveillance and treatment strategies. Penn State University and Extension, United States Department of Agriculture (USDA), and Pennsylvania Department of Agriculture (PDA) have joined forces to control and contain the spread of SLF. Penn State University is leading the research efforts currently underway to answer the many questions we have about the insect’s biology, pesticide studies, and the insect’s ability to adapt to the environment in Pennsylvania. USDA and PDA are actively treating locations where SLF has been reported. USDA is treating the outer edges where the populations are small and will begin to move inward towards the quarantine center. PDA is treating areas where the population numbers are high and is targeting high-risk pathways that may contribute to moving the insect to other locations. As funding is available, both USDA and PDA will work on properties for treatment. PDA is also surveying all counties in the state outside the quarantine, looking for SLF.