See a Spotted Lanternfly? Here's What to Do. - Washingtonian

"So, what can you do? If you spot egg masses, crush them or scrape them into a container with soapy water or rubbing alcohol, then toss it in the trash. Adults and nymphs can be smashed. If you vacuum them up, just know that they can survive that and might have to be squished as well. Skip sticky traps or insecticides, as DC's Urban Forestry Division warns they can hurt other wildlife."

"According to the US Department of Agriculture, adults are about an inch long, with brown-to-gray forewings dotted in black and hind wings that flash red patches, black spots, and a white or black band. Nymphs are smaller, wingless, and start out black with white spots before developing red as they age. Egg masses look like wet gray putty and hold 30 to 50 eggs."

"Spotted lanternflies especially love the tree of heaven (yes, the irony isn't lost on us). Removing the tree can limit their favorite hangout, but be sure to clear it entirely so it doesn't grow back. When in doubt, you an a sighting on the Urban Forestry Division website. You won't be able to eliminate lanternflies completely, but you can help stop the spread."

Spotted lanternflies, native to Asia, have spread from Pennsylvania (2014) to infest 19 states plus DC. Adults are about an inch long with brown-to-gray forewings and red-and-black hind wings; nymphs are wingless and change from black with white spots to red as they age. The insect feeds on over 70 tree and plant species, producing sticky honeydew that encourages mold and harms vegetation. Recommended actions include crushing egg masses or scraping them into soapy water or alcohol, smashing adults and nymphs, avoiding sticky traps or insecticides to protect other wildlife, removing tree of heaven, and reporting sightings to help limit spread.

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