Spotted Lanternfly inNew London County, CTSPOTTED LANTERNFLY GUIDE
New London County confirmed SLF in 2024 as populations spreading northeast from Middlesex and Hartford counties reached the Thames River valley. The county's mix of military facilities at Groton, active freight rail through Norwich, and the Port of New London creates sustained introduction pressure from vehicle and cargo movement. The Thames River corridor connecting Norwich inland to the New London waterfront is the primary dispersal axis for ongoing population spread.
Highest activity zones
SLF Hotspots in New London County, CT
New London
Active zone
Norwich
Active zone
Groton
Active zone
Waterford
Active zone
Montville
Active zone
Primary SLF food source
Tree of Heaven in New London County, CT
Tree of Heaven lines the freight rail corridors through Norwich and the Thames River valley in New London County, and the I-95 coastal highway supports Ailanthus populations from the Connecticut border through New London and Groton. Coastal shipping traffic at the Port of New London and the Thames River tributary valleys in Montville and Waterford are priority zones for SLF monitoring as confirmed populations continue to expand eastward toward Rhode Island.
Identify Tree of Heaven →Local action resources
What To Do in New London County, CT
Report a Sighting
Every sighting in New London County, CT maps the invasion front. Report directly to Connecticut Agricultural Experiment Station (CAES).
Report Now →Squish on Sight
See a spotted lanternfly? Kill it immediately — it is legal and encouraged in all states. Learn the best kill methods.
Full Fight Guide →Map ToH in Your Block
Tree of Heaven removal cuts off SLF food supply. Add ToH sightings to the community map to guide removal efforts.
View Sighting Map →Statewide resources
Full CT State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full CT guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in New London County, CT. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in New London County, CT.
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