I was delighted last Thursday to see quite a few Calico Pennant (Celithemis elisa) dragonflies during a visit to Occoquan Bay National Wildlife Refuge. The markings and wing patterns on this species are really striking, making this one of the most attractive species that I see during the dragonfly season.
Some of the Calico Pennants appeared to have newly emerged—when dragonflies initially break through the exoskeleton of their water-dwelling larvae selves, their wings are really shiny and fragile and their coloration is often pale. The dragonfly in the first photo appears to be in that stage of development, which is sometimes referred to as “teneral.” It you look closely at the place where the dragonfly is grasping the vegetation, you can see what is quite probably its discarded exoskeleton from which it had recently emerged.
The Calico Pennants in the second and third photo are females, as was the one in the first photo. The patterns on the wings of these more mature females are more distinct and their yellow coloration is somewhat brighter. How do I know that they are females? If you look closely at the ends of their abdomens (the “tails”) you can see the terminal appendages that indicate their gender.
Female Calico Pennants have yellow markings on their abdomens, but that is not a reliable indicator of their gender, because immature males have that same coloration. The dragonfly in the fourth photo, for example, is an immature male Calico Pennant. If you compare the tip of the abdomen of this dragonfly with the one in the third photo, you may be able to see that there are differences.
What does a mature male Calico Pennant look like? I managed to spot only a single mature male that day, but fortunately was able to capture a shot of it. As you can see in the final photo, adult male Calico Pennants have red marking on their abdomens and the veining on their wings is pinkish in color.
We are gradually transitioning to the summer dragonfly species and some of the early spring ones are starting to disappear. I’ll be keeping my eyes open for the “new” species, so don’t be surprised to see more dragonfly photos in the upcoming months.
© Michael Q. Powell. All rights reserved.
Mike Powell 