Then it fluttered, and its wings parted just enough to reveal a flash of bright red, black, and white underneath, like a tiny magic trick. Curious, the observer snapped a photo and started searching online, wondering if this was one of the invasive insects people had been talking about. What turned up sounded very much like the spotted lanternfly, an invasive plant-feeding insect originally from Asia.

What Is the Spotted Lanternfly?

The spotted lanternfly, scientifically known as Lycorma delicatula, is a planthopper rather than a true fly, despite the name. It originated in Asia and was first detected in the United States in Pennsylvania back in 2014.

Since that initial discovery, the insect has spread to additional areas. Agricultural agencies and university extension services have been monitoring and managing its populations as part of ongoing efforts to limit its impact.

Identifying Features to Look For

Recognizing a spotted lanternfly starts with its size and coloring. Adults are generally about an inch long, which makes them easy to spot once you know what to check for.

• Gray forewings covered in black spots
• Darker, patterned tips on the forewings
• Bright red, black, and white hindwings hidden underneath, visible only when the wings open

That sudden burst of color when the wings part is often what makes people stop and take a closer look. For anyone who hasn’t encountered one before, the contrast can be genuinely startling.

Why It Matters If You Spot One

Not every unusual-looking bug is an invasive species, and correct identification matters before taking any action. Misidentifying a harmless insect helps no one, so it’s worth comparing what you see carefully against the known features.

That said, if the insect you find does match the description of a spotted lanternfly, there are real reasons to take it seriously. These insects feed on plant sap and can damage vulnerable plants they settle on.

They can also spread to new areas when people unknowingly transport them, or their egg masses, to places they wouldn’t otherwise reach.