There have been numerous sightings of the Spotted Lantern Fly, an invasive species of insect that destroys black walnut trees, grapevines, and other important plants. Residents are advised to kill them on sight. More details in this story from TapInto.net. If you see one, you should also report it to the state via this online link:

https://www.nj.gov/agriculture/divisions/pi/prog/pests-diseases/spotted-lanternfly/#reporting-tool