Fireflies have been coming out in throngs every night around our house. They are always enchanting to watch. This one landed on the kitchen window the other night.
Besides the light producing organ near the end of the abdomen, the eyes are also noteworthy. I didn't know fireflies had such big eyes. This is, however, not surprising; an animal that finds its prospective mates by mutual light signals in the dark would be expected to have evolved large eyes.