(This post was originally written in March 2021)
Traveling this summer? Beware of unwanted hitchhikers. The spotted lanternfly (Lycorma delicatula) was first reported in Pennsylvania in 2014 and has since spread to several eastern states and the Midwest. Lanternflies are poor fliers but can hitchhike. Large egg masses are formed and these masses are laid on trees, wood or rusty metal (e.g. old train cars). Egg masses can also be found on vehicles, outdoor equipment, stone, or other smooth surfaces, and it is these egg masses that are often moved by human assisted spread.
The spotted lanternfly can congregate in large numbers and preferred hosts are Tree of Heaven and grapes but spotted lanternflies have been documented on a variety of species. These phloem feeders concern fruit producers as their large numbers can cause a nuisance. They squirt honeydew from their abdomen (which can rain down on people) and this substance promotes the growth of black sooty mold on leaves, bark, and outdoor surfaces such as decks and patios.
If you are traveling east, do not pack up the lanterfly when you return home. Check yourself and your belongings for any tag-alongs. Adults are the easiest to spot and are most abundant late summer through fall. With populations now established in Ohio, residents may begin seeing more lanternflies in the coming years.