Spotted Lanternfly

Learn about the Spotted Lanterfly (SLF), and what action you can take to stop the spread of this invasive insect that is threatening southeastern Pennsylvania.
Spotted Lanternfly - Articles

Updated: December 13, 2017

Spotted Lanternfly

Photo: Nancy Bosold, Horticulture Educator, Penn State Extension, Berks County

Lycorma delicatula, commonly known as the Spotted Lanternfly (SLF), is a new invasive insect that has spread throughout southeastern Pennsylvania since its discovery in Berks County in 2014. SLF presents a significant threat to Pennsylvania agriculture, including the grape, tree-fruit, hardwood and nursery industries, which collectively are worth nearly $18 billion to the state's economy.

Penn State's College of Agricultural Sciences and Penn State Extension are at the forefront of education and research aimed at stopping the spread of this exotic species. Following are resources to help growers, property owners and others understand how to identify the insect, what to do if they find it and how to comply with agency regulations.

Spotlight Resources

Article: How You Can Comply with the Spotted Lanternfly Quarantine Regulations

The Pennsylvania Department of Agriculture (PDA) has established a quarantine order in municipalities where SLF is known to exist. Quarantined counties as of November 2017: Berks, Bucks, Carbon, Chester, Delaware, Lancaster, Lebanon, Lehigh, Monroe, Montgomery, Northampton, Philadelphia, Schuylkil

Article: Tips for Handling Yard Waste in Quarantined Areas

Learn your responsibilities and the best practices for handling yard waste infected with SLF.

Article: What to Do If You Find Spotted Lanternfly

Learn what steps to take if you discover Spotted Lanternfly on your property.

Article: Spotted Lanternfly Management Calendar

There are various management techniques to consider to destroy or control the Spotted Lanternfly. Learn the recommended methods to use during certain times of the year.

Article: How to Eliminate or Control Spotted Lanternfly Adults

Find specific recommendations for eliminating SLF.

Photo Gallery: Spotted Lanternfly: What to Look For

Pictures of the Spotted Lanternfly and its egg masses.

Video: Spotted Lanternfly Identification and Life Cycle

View the life stages and cycle of spotted lanternfly in Pennsylvania from images and observations from the 2015 and 2016 growing seasons.

Video: How to Remove Spotted Lanternfly Eggs

This video details the methods that should be used when removing egg cases

What we are doing

Researchers in Penn State's College of Agricultural Sciences are looking for solutions to help stop the insect's spread and save agricultural crops from serious damage. Learn more...

Additional Information

Resources from the Pennsylvania Department of Agriculture (PDA)

National Pest Alert Fact Sheet - United State Department of Agriculture (USDA)


Horticulture Diagnosis of Plant Problems Lycorma delicatula (spotted lanternfly) Estimating and Bidding for Landscape Installation Green Infrastructure

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