Yesterday I decided to visit Occoquan Regional Park in nearby Lorton, Virginia to search for some dragonflies. Some of you know that the place that I visit most frequently is Occoquan Bay National Wildlife Refuge, so you may be a little confused, because they both have “Occoquan” in their names. The Wildlife Refuge is run by the U.S. Fish and Wildlife Service, whereas the Regional Park is run by Fairfax County.
The locations are only a few miles apart, but their habitats are different enough that I tend to see some different dragonfly species at each spot. I was hoping to see some Spiketail dragonflies, but came up empty-handed. As I was nearing the end of my adventure, however, a large dragonfly flew overhead. I did not get a very good look at it, but its size, shape, and flight profile suggested to me that it was from the Darner family.
A short while later, I spotted another large dragonfly (possibly the same one) flying around some vegetation and was thrilled when it landed. At the precise moment that it landed, my vision was partially blocked by some branches, but I had a good idea of where I hoped the dragonfly was perched. I moved a few steps slowly and silent to get an unobstructed view of the dragonfly.
I held my breath when I saw that it was a Swamp Darner (Epiaeschna heros), the largest dragonfly in my area at about 3.5 inches (89 mm) in length. Wow! Judging from its terminal appendages (the tip of the “tail”), I am pretty sure that this is a female. I took the second photo below initially, afraid to move closer for fear of spooking the dragonfly.
I then stepped a little closer and moved up and down as I tried to get a better shot. My options were limited, because the dragonfly was perched about 10 feet up (about 3 meters) and was surrounded by intertwined vines and branches. I think that the first shot below is a marginal improvement on my first shot and encourage you to click on it to get a better look at the Swamp Darners beautiful markings, including its spectacular eyes.
I suspect that this park will be in my regular rotation of places to visit as additional dragonfly species continue to emerge.
© Michael Q. Powell. All rights reserved.
Mike Powell 