A Monarch butterfly during a training workshop at the Prairie Ridge Ecostation in Raleigh on Friday, August 17, 2012. The workshop is part of the Monarch Larva Monitoring Project developed by researchers at the University of Minnesota and stretching across the United States and Canada. Monarch caterpillar larvae molt their outside skins 5 times and the interval between molts are called instars. SHAWN ROCCO — srocco@newsobserver.com