The bugs are so intensely dangerous to our state's wildlife — which hasn't had a chance to evolve natural defenses against them — that the counties where they've appeared are under an actual, real quarantine.
There are 14 counties under lockdown, enforced by the Pennsylvania Department of Agriculture. That means residents have to inspect all materials they move in and out of the counties.
Also, businesses are required to obtain special permits if they want to transport things in or out of the lanternfly zone during the course of their work.
Last month, five counties in western New Jersey were put under quarantine too.