Developing butterfly wings. Shown are the developing pupal wings of the Buckeye (Junonia coenia). The wing primordia were dissected from the pupae (chrysalis) of these species. At the time of dissection the wings had little or no color to them. They were placed in a special media that allows the wings to continue to survive, and over the course of 27 hrs (Buckeye) the color patterns appear in the wings.