The spotted lanternfly (Lycorma delicatula) is an invasive insect first found in Pennsylvania in 2014. It has since spread rapidly, threatening crops, trees, and ecosystems.
How They Harm Plants
Lanternflies pierce plants to suck sap, weakening them and making them vulnerable to disease. They also excrete honeydew, which promotes black sooty mold that blocks sunlight and disrupts photosynthesis.
What They Look Like
Adults: Gray wings with black spots, red underwings
Nymphs: Black with white spots, turning red as they mature