The bug is called a spotted lanternfly and is a desructive, invasive insect from China and the surrounding region. It is an excellent hitchhicker so NJ has a "Look before you leave" slogan so that you inspect your vehicle, cloths, etc. before you leave a quarantined area.
Burlington, Camden, Gloucester, Hunterdon, Mercer, Salem, Sommerset and Warren are already on quarantine status. Spottings in other counties should be reported to NJD of Agriculture at 609 406-6943