Several years ago, Spotted Lanternflies were discovered in southern Berks County, Pennsylvania, not far north of Philadelphia. They probably arrived as an egg mass, stuck to a pallet or similar packing material and were received by an unsuspecting recipient, who did not notice them.  Since then they have been breeding and spreading. Spotted lanternflies are known to “host” (feed) on many different hard wood trees that we have in our landscape. That said, they tend to have preferred choices that they feed on, such as Ailanthus, walnuts or grape vines. This means that they will choose certain species first if possible, but settle for what is available. Get the facts and help stop the spread of spotted lanternflies… Click HERE for the Homeowners Guide to Spotted Lanternfly Management from Penn State Extension.