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Spotted Lanternfly

What is it & why does it matter?

The Spotted Lanternfly or SLF, Lycorma delicatula (White), is an invasive planthopper native to Asia fist discovered in PA in Berks County in 2014.

SLF feeds on sap from a myriad of plants but has a strong preference for plants important to PA's economy including grapevines, maples, black walnut, birch and willow. SLF's feeding damage stresses plants which can decrease their heal and in some cases cause death.

It's not just our plants at risk, it's our economy.

The SLF can impact the viticulture (grape), fruit tree, plant nursery and timber industries, which contribute billions of dollars each year to PA's economy.

  • A 2019 economic impact study estimates that, uncontrolled, this insect could cost the state $324 million annually and more than 2,800 jobs.

Pennsylvanian's Quality of Life can be impacted.

SLF excrete honeydew, a sugary waste that attracts bees, wasps and other insects and this waste build up on any surface below the SLF. The build-up of waste also leads to the growth of sooty mold and black-colored fungi.

How to stop the spread of Spotted Lanternfly

Join the effort to control and prevent the spread of SLF.

  • Learn how residents and businesses can comply with the SLF Quarantine Order.
  • Any efforts you make in destroying the Spotted Lanternfly or its' egg masses help reduce populations on your property and in your community.
    • SLF can be controlled by a combination of:
  • If you are in a quarantine area, please "Look Before You Leave" as SLF can move easily
  • Use the SLF checklist to complete inspections of vehicles, trailers, or any outdoor items before movement within or out of quarantine locations.
  • Report SLF sightings:

Sign up for the e-newsletter, The Spotted Lanternflyer, that provides the latest information and updates.

The PA Dept. of Agriculture is working with the U.S. Department of Agriculture and Penn State University and Extension to control and contain SLF. Learn more about current research efforts and SLF program activities