If you don't know what a Spotted Lanternfly is consider yourself lucky. You will in the next few years. It's an invasive insect from Asia that found its way to Pennsylvania and has spread to New Jersey. Here's some good info:
https://extension.psu.edu/spotted-lanternfly I saw my first one, an adult, here in New Jersey last year. I had no idea what it was. I marveled at how beautiful it was with its brilliant orange wings. This year I've been seeing a lot of juveniles in my yard which causes me great concern because some people I know around here have had their gardens and trees stripped clean by them. The juveniles jump very quickly and are consequently very hard to squish. Praying Mantises eat them but there aren't enough Praying Mantises to put a dent in their population. For all intents and purposes they have no natural enemies here. Concerned yet?
As you all know I have a vegetable garden this year. I also have about twenty big trees in my yard. I needed to fight back so I looked into it. I was going to buy Praying Mantises and also plant Milkweed. Milkweed is toxic to them but they eat it anyway and die. I checked out the price of Praying Mantises... for two egg cases it's about a hundred bucks. That's to rich for my blood. I ordered the Milkweed seeds and they arrived yesterday. Then I looked up the best way to plant them. It turns out you have to plant them in the Fall. Freezing and thawing throughout the Winter cracks their hard seed shells so they can germinate in the Spring. So although they might eventually prove helpful they're worthless to me this year. A side note; not only does Milkweed kill Lanternflies but helps Hummingbirds, bees, and butterflies.
I'm not completely helpless though. A friend told me a way to kill the juveniles. Mix Pine Sol with an equal part of water and a few teaspoons of sugar. Leave it out where the little bastards are and they drink it and die. I put out three bowls of the cocktail late this afternoon. I'll let you know how it works.
Below are two pictures of the Spotted Lanternfly; first the adult then the juvenile.