There are quite a few blue dragonflies where I live, so I can’t always rely on color to tell them apart. Fortunately, it is relatively easy to identify a male Spangled Skimmer (Libellula cyanea), because it has a lighter-colored spot beside a black spot on the outer leading edge of each wing—as far as I know, no other dragonfly in our area has multi-colored stigmata, the technical name for those spots.
The stigmata are not there for decoration, but reportedly serve an important role in the flight of dragonflies. I do not really understand the physics of flight, but have read that the stigmata are heavier than the adjoining cells and help to stabilize the vibrations of the wings.
I spotted this male Spangled Skimmer as he was perched in the vegetation at the edge of a small pond at Shrine Mont, an Episcopal Church retreat center, in Orkney Springs, Virginia. Most often I try to get side views of dragonflies in order to get most of the body in focus, but in this case I deliberately tried to focus on the dragonfly’s large, compound eyes, knowing that much of the body would fall out of focus. This allows the viewer’s attention to be drawn immediately to those eyes.
I encourage you to click on the image to get a closer look at the dragonfly’s amazing eyes.
© Michael Q. Powell. All rights reserved.
Mike Powell 