WTNUT - I haven't seen them strip trees here. They make a huge ruckus with their singing / buzzing when there are millions of them, but I haven't seen tree damage. We get some of the type that come out every year, too. They come up from beneath the soil and crawl up tree trunks, hatch from their shells at night , and leave an empty shell clinging to the tree trunk or limb. If there are some types of cicadas that strip trees - I don't know about them.