Spotted lanternfly

 

What you need to know about spotted lanternfly in Connecticut

Spotted lanternfly (SLF) is an invasive insect that harms plants, trees, and crops. It is not native to the United States and can spread across Connecticut. The Connecticut Agricultural Experiment Station (CAES) studies SLF and provides resources to help reduce its impact and protect plants. You can use this page to:

  • Learn what spotted lanternfly is
  • Find out how to identify it at each life stage
  • Report sightings to help track its spread
  • Get updates on where it is active in Connecticut
  • Access pest alerts and official resources
  • Stay informed with the latest news

Acting early can help slow the spread.

Help stop the spread of spotted lanternfly

 

Identify spotted lanternfly at each life stage

Learn what the spotted lanternfly looks like as an egg, nymph, and adult. This guide highlights key traits of each stage.
Find identification details  
 

Report a spotted lanternfly sighting

Report where you found spotted lanternfly to help track and slow its spread across the State.
Find identification details  
 

Check quarantine and movement rules

Learn where spotted lanternfly restrictions apply in CT. Find out how to move items safely and help reduce its spread.
Get quarantine guidance  
 

Find ways to manage and control spotted lanternfly

Get resources for homeowners, landscapers, and growers. Find tools and fact sheets to help stop its spread.
Explore control options  
 

What you need to know about spotted lanternfly in Connecticut

SLF is an invasive pest that feed on many plants and outdoor spaces across Connecticut. It does not harm people, but it can be a nuisance in yards, gardens, and agricultural areas.

Learn to recognize signs of damage on plants like sticky residue and mold. Find photos and guidance to help you identify and respond to this pest.

Learn about spotted lanternfly impacts  

How can you spot hitchhiking spotted lanternfly?

In the fall, SLF may lay egg masses on vehicles. Adults may also cling to surfaces during travel. Before you leave an area, inspect your vehicle and belongings for insects or egg masses. Removing them helps stop the spread across the State.

Check for SLF on:

  • Cars and trailers
  • Outdoor surfaces
  • Clothing and personal items

Where can you find more spotted lanternfly resources?

Use these resources to learn more about spotted lanternfly. Find simple details about what it looks like, how it spreads, and how to manage it.


Find spotted lanternfly resources from Penn State 

Visit this resource for more info on the spotted lanternfly. It covers how to identify it, its spread, and management advice.

Get spotted lanternfly information from DEEP 

Get info from the Department of Energy and Environmental Protection (DEEP) on the SLF in CT. You’ll find updates and helpful guidance there.

Explore federal spotted lanternfly resources 

Use this resource to learn more about spotted lanternfly. Get updates and basic facts from across the United States.