Spotted Lanternfly Look-Alikes: What Else It Could Be

A spotted lanternfly at rest holds gray, black-spotted wings roof-like over its back. The bright red hindwing stays hidden until the insect opens its wings. If the insect is holding its wings flat and wide, it does not match the lanternfly posture.

The two-second check

1. Is it about 1 inch long and 1/2 inch wide at rest? Adults are that size. A much smaller insect is something else.
2. Are the wings held roof-like over the back? That is how a spotted lanternfly rests. A flat, wide-winged insect does not match.
3. Are the forewings gray with black spots, with black tips outlined in gray? That is the adult pattern.
4. Do you see a red hindwing with black spots and a white band? That is the flash of color when the wings open. At rest you may not see it.
5. Is the abdomen yellow with black bands? That is another adult mark.

If the answer to the size and wing questions is no, do not kill it. Take a photo and check the list below.

The named look-alikes

The New Jersey Department of Agriculture publishes a look-alike gallery. Its list is a useful starting point because it names the species rather than saying “it might be a moth.”

The moths are the largest group, and that is the point. A spotted lanternfly is not a moth. UMass Extension calls it a planthopper in the order Hemiptera, the true bugs, and notes that the name “lanternfly” is misleading because it is neither a fly nor a moth. Cornell makes the same point: with the wings spread, an adult can look like a moth, but it is a planthopper more closely related to cicadas, stink bugs, aphids, and leafhoppers.

The nymph problem

Adult look-alikes get the attention, but the nymphs cause more false alarms.

Penn State Extension says newly hatched nymphs are small, about 1/8 inch, and can be mistaken for small ticks or spiders. The first three stages are black with white spots. The fourth stage is red with white spots and black stripes and is about 1/2 inch long.

That means a tiny black-and-white insect on a plant in May or June is worth a second look, but it is not automatically a spotted lanternfly. Check the white spots, the jump, and the plant. Spotted lanternfly nymphs are strong jumpers.

Which ones should you leave alone?

Do not kill a named look-alike just because it has spots. None of them is a spotted lanternfly, and killing them does not reduce the population you are trying to manage.

The two-second check is the point of this page. It replaces the reflex to smash anything with spotted wings.

Is it harmful to you?

No. Penn State Extension says spotted lanternflies cannot bite or sting. They feed on plant sap outdoors.

The damage is to plants and to the surfaces under them. APHIS says the insects excrete a sticky, sugary liquid called honeydew. Honeydew can coat leaves, decks, cars, and outdoor furniture, and it promotes sooty mold.

Penn State Extension adds an honest limit: spotted lanternflies cannot be prevented from coming onto any one property, and low numbers may not need treatment at all. That is worth knowing before you buy anything.

What to do with a photo

Take pictures of the insect, the egg mass, or the infestation. Get a clear shot of the wings or the back, and include something for scale if you can.

Note the location: street address and ZIP code, intersecting roads, landmarks, or GPS coordinates.

Then report it. In Pennsylvania, use the Department of Agriculture’s online reporting form or call 1-888-4BAD-FLY. Outside Pennsylvania, APHIS directs residents to their state plant regulatory official.

If you are in a known infestation area and the insect is on your property, you can destroy it. APHIS says to smash egg masses and scrape them into a sealed bag with hand sanitizer or rubbing alcohol, then put the bag in the trash.

Where to go next

The spotted lanternfly species profile covers the full life cycle and reporting rules. The hatch timing guide tells you what to look for each month. For other spotted insects, browse the look-alike hub or the identification guides. If you are in Pennsylvania, the state page collects the quarantine and reporting links in one place.

One last check: if the wings are flat and the insect is resting like a moth, it is not a spotted lanternfly. Leave it alone and keep looking.