About one month ago, while clearing away some of the dead flowers in the flower bed from last year, we located a silk moth cocoon. We brought it indoors, and I have kept it in a warm, dry place on a shelf with some cards and knick-knacks since then.
Today (July 5, 2015), a beautiful male Polyphemus moth (Antheraea polyphemus) emerged from the cocoon. This evening, my son and I let it go in the woods near our home. He was quite a beauty to behold, and we are so happy to have been able to observe and enjoy him!