A destructive, invasive insect has turned up in Ontario. In the U.S., people are told to stomp it

A recent spotted lanternfly discovery in St. Catharines, Ont., is renewing concern about the destructive insect reaching Canada from the United States. Experts say the invasive insect poses a serious threat to vineyards, fruit trees and hardwoods because it feeds on plant sap and can kill grapevines.