Spotted lanternfly mass on grapevine.

Spotted lanternfly mass on grapevine.

A spotted lanternfly mass on a grapevine in Boyertown, Pennsylvania, last year. Honeydew droppings can be seen in the upper left corner. Mass feeding by the pest can cause shoots and canes to wither and die, and honeydew can lead to sooty mold growth that contaminates grape clusters. 

Erica Smyers