One of the clear signs that we are moving through spring is the emergence of large numbers of full-sized butterflies. Last week I was delighted to spot multiple Black Swallowtail (Papilio polyxenes) butterflies. Dark swallowtail butterflies can sometimes be problematic for identification, because in our area we have Pipevine Swallowtails, Spicebush Swallowtails, and the dark morph female Eastern Tiger Swallowtail, in addition to the Black Swallowtail.
However, these butterflies were relatively easy to identify, because I could clearly see the black dot inside the orange dot in each of the photos, one of the field markers of a Black Swallowtail. I was quite struck by the unblemished state of each of these butterflies, which seemed to be fresh and bright with fully intact swallowtails. As the season moves on, some of the butterflies will become more and more tattered and faded.
If you are curious about the identifying marks for the different kinds of dark swallowtails, I highly recommend a blog posting by Louisiana Naturalist called Four Dark Swallowtails. In this posting, she does side-by-comparisons of the four species from different angles and points out the visible differences that are really useful in identification.
© Michael Q. Powell. All rights reserved.
Mike Powell 
Swallowtails are so impressive, which is why we love photographing them.
Your photos here are super, Michael. Butterflies flutter and fly so fleetingly, and their wings move even when they’re perched. Difficult to photograph and difficult to identify, but we got a bonanza here with your photos. Thank you.
Such an elegant beauty 🙂