On Monday I wrote:

  Juan Melli took this photo last year.

   What is it, and where did he take the photo?

   The answers: As many of you posited, it is a Spotted Lanternfly. It was photographed at one of its favorite haunts (alas), the State Line Lookout in Alpine, NJ. Congrats to Ali Fragale, who said it was a SLF , either on the Palisades or Hoboken. Congrats, Ali!

More on spotted anternflies here:

https://www.aphis.usda.gov/plant-pests-diseases/slf