WHAT'S BUGGING YOU? | Young Mahalia Eddy of London, visiting Vermont with her family this summer, was visited herself by a rather unusual insect last week. Standing still it looked for all the world like a small thorn, but it took on a whole new aspect when, rising up on six legs, it walked around on Mahalia's arm. Kent McFarland, co-founder of the Vermont Center for Eco-studies, identified this as a tree hopper, a member of the insect Family Membracidae. Mahalia simply called him, "Tony." He hung around for quite a while before hopping . . . and he was gone! (Herald / Bob Eddy)