Spotted Lantern Flies: What they are and what to consider doing

Updated: Oct 3

Spotted Lanternflies: (SLF) is an invasive insect present in Chester County and surrounding areas. SLF threatens agriculture, tree health and it is a nuisance pest. Chester County is within the SLF quarantine zone. Check for and remove SLF egg masses from late fall to early spring. Remember that egg masses may be underneath your car or in your wheel well. During all other times of the year, check for nymphs and adults, and keep your windows rolled up when you park. Don’t store things or park under infested trees, and do not transport firewood. Inspect your vehicle for SLF before traveling.


What to do

The Spotted Lanternfly (SLF) nymphs will be hatching as early as late April.


One thing we can all do is to be informed. Start by reading the information provided by Penn State Cooperative Extension Service.


Spotted Lanternfly Management for Homeowners



You can learn important information regarding:

  • how to scrape off and destroy egg cases,

  • how to band trees,

  • how to trap nymphs,

  • how to remove favored host trees,

  • how to use chemical control, when appropriate.

There is more information on the general Penn State Cooperative Extension Service site for SLF.




If you do not find the information you need or have questions, call the local Penn State Extension office at 610-696-3500.



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