Spotted Lanternfly
(This information comes from the Pennsylvania Department of Agriculture)

The Spotted Lanternfly (SLF), Lycorma delicatula (White), is an invasive planthopper native to China, India, Vietnam.  It was first discovered in Pennsylvania in Berks County and has spread to other counties in the southeast portion of the Commonwealth.  This insect has the potential to greatly impact agricultural crops such as grapes, hops, and hardwoods.  It is also reducing the quality of life for people living in heavily infested areas. To date, it has been spotted in only a few locations in Delaware County, but we expect it will advance into the county over the next several years.

What Is Being Done

Penn State University and Extension, United States Department of Agriculture (USDA), and PA 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 ability of the insect to adapt to the environment in Pennsylvania.   USDA and PDA are actively treating locations where SLF has been reported.  USDA is treating on the outer edges where the populations are small and will begin to move inward towards the center of the quarantine.  PDA is treating areas where the population numbers are high and is targeting high risk pathways which 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.

What Can Be Done

Spotted Lanternfly can be controlled with a combination of physical removal of life stages and host trees, as well as pesticide applications.  Penn State Extension has developed information for homeowner management as well as a management calendar See the website listed below for more .detailed information

How You Can Help

This insect is easily moved if no one is looking.  As a resident of Delaware County, you are in the quarantined area, and so please “Look Before You Leave.” Inspecting your vehicles, trailers, or any outdoor items before you move around or out of the quarantine is important.  If possible, don’t park in tree lines and keep windows rolled up when you park your vehicle.  Know the life stages of the insect and when to look for them.

Using the recommendations developed by Penn State Extension, take control measures on your own property.  Any efforts you make in destroying the Spotted Lanternfly or its egg masses helps your property and community, and will limit its spread beyond our area while vital research is being done to explore additional control mechanisms.

Report sightings of the Spotted Lanternfly.  All reports of SLF outside of the quarantine are taken seriously and will be investigated.  Reports within the quarantine are registered in a database for USDA and PDA. The database is used to help determine properties for treatment.  Treatment is based on location, risk, and available funds. 

Please join the effort to control and prevent the spread of Spotted Lanternfly. We need everyone to protect their properties, communities, and the Commonwealth from this invasive insect that has the potential to change our landscape and quality of life.


For additional information and extensive resources regarding
the Spotted Lanternfly, go to the following Penn State website:

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