 the ohio state fair on the biggest in the country opening today this year fairgoers being urged to be on the lookout for invaders with its colorful wings and unusual shape the spotted lanternfly may be pretty and it's certainly harmless to people but it loves to eat leaves any type of damage to those plants and they could actually kill a plant brian baldridge is director of the ohio department of agriculture spotted lanternflies identified in 12 counties here in the state of ohio