After doing some further digging through books and online I believe that the Black Swallowtail is the best match for what I saw. Interested it know what you are seeing or not seeing that make you think it is not a Black Swallowtail?
Also I don't believe that it is a Papilio multicaudata, the one I photographed does not have nearly enough yellow and it would be considerably far outside its natural range (SW PA).
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@NRumbaugh, I agree with your assessment of your specimen. This certainly looks like a Black Swallowtail, and a male at that.
After doing some further digging through books and online I believe that the Black Swallowtail is the best match for what I saw. Interested it know what you are seeing or not seeing that make you think it is not a Black Swallowtail?
Also I don't believe that it is a Papilio multicaudata, the one I photographed does not have nearly enough yellow and it would be considerably far outside its natural range (SW PA).