As I have mentioned previously, I have real difficulties in identifying many of the dark swallowtails that I encounter. However, sometimes I get a perfect view of one and the task is vastly simplified.
Last week at Occoquan Bay National Wildlife Refuge, for example, I spotted this Spicebush Swallowtail butterfly (Papilio troilus) feeding on a blooming thistle plant. I could tell it was a Spicebush Swallowtail because its row of inner orange spots was interrupted by a swoosh of blue that looks a bit like the tail of a comet. Additionally, the position of the butterfly made for a beautiful composition of the image that I was able to capture.
© Michael Q. Powell. All rights reserved.



































