Spotted Lanternfly (SLF)

Spotted lanternfly (Lycorma delicatula) or SLF, is an invasive insect pest from Asia that primarily feeds on trees of heaven (Alianthus altissima) but can also feed on a wide variety of plants such as grapevine, hops, maple, walnut, and fruit trees. While the full impacts of SLF are unknown, the insect will negatively impact the agricultural and tourism industries and may impact New York's forests. This information is from New York State Department of Environmental Conservation. For more information from NYSDEC please go to their website.

**You DO NOT need to report sightings of this insect in Nassau County.**


If you see SLF at any of the following stages, the current guidance is to kill this invasive insect. PennState Extension has a management guide with best practices and information that you can access here.



If you would like to read more on the damage SLF can cause please review information from Cornell College of Agriculture and Life Sciences at this link.


Spotted Lanternfly Eggs

Spotted lanternfly are laying eggs September through December. If you spot the following, make sure you kill the eggs before they hatch next spring.
Egg masses contain 30-50 eggs and are covered with a mud-like gray substance which cracks over time and looks like mortar. Eggs are commonly found on trees, fences, cars and outdoor furniture.
How to scrape eggs ➡