Hot Days of Summer

You know it's a typical hot August day when you look out over your yard at noon and see swarms of dragonflies. I don't know what they find appealing about the near 100 degree temperature and near 100% humidity. They are masters of the noon day lawn and I say they are welcome to it; I will come out later with the fireflies when the temperature is much cooler. These guys must know what they are doing because they have been around a lot longer than man; in fact, this Order of insect (Odonata) with its nearly 5000 species are some of the most ancient insects on earth.

Notice the shadow cast upon the stick from the opaque cells in the lower wing.