On my drive to St Louis last weekend, I stopped at a rest area. When I stepped up on the curb I noticed these butterflies between my car and curb. Fortunately I did not pull all the way forward to the curb or I would have missed them. Butterflies are attracted to their own color, shape, veins and recognize each other thru pheromones. These butterflies did not choose the most romantic place for their rendezvous.