Above:Cinnabar larvae on Ragwort. (photo by Jean) Right: The Cinnabar Moth. (photo by courtesy of the Internet)
These Day flying moths (occasionally come to light in traps) lay hundreds of eggs, most of which will be predated by birds during the day. (Which is of course, all part of the eco system!) They strip the Ragwort of flowers and leaves and then crawl or fall downwards where they pupate in a flimsy cocoon just under the ground where they overwinter Flight season mid May-early August.