Today, while walking the dogs near the Swannanoa River in Asheville, we saw hundreds of these Green June Beetles, mostly mating. I have never seen swarms like this before. Watch your fruit trees!
Here’s the scoop on them: Hosts: The beetles injure fruits of many kinds, including grapes, peaches, raspberry, blackberry, apple, pear, quince, plum, prune, apricot, and nectarine, and frequently feed as well on the sap of oak, maple, and other trees, and on the growing ears of com. They are attracted to ripe (especially overripe) fruits. The larvae feed on decaying organic matter in the soil or in well-rotted manure or compost piles.
Symptoms: Adult beetles damage fruit by feeding on ripening fruits. Beetles gain entry into undamaged fruits by gouging with the horn on the front of the head, then feed on the flesh of the fruit. Several beetles may bury themselves entirely in a ripe peach. Their odor and excrement ruins most pieces of fruit they visit even if feeding damage is not severe.