I have great difficulties distinguishing among three butterflies:
1. Eastern Tiger Swallowtail, dark-form female (Papilio glaucus)
2. Pipevine Swallowtail (Battus philenor)
3. Spicebush Swallowtail (Papilio troilus), the adults of which mimic the “distasteful” Pipevine Swallowtail
I’m pretty sure this image is one of the above and in my BAMONA submission my “suggested identification” was dark-form female Eastern Tiger Swallowtail, but we shall see what Roger has to say!
Yes!
Confirmed at BAMONA as the dark female form of Papilio glaucus or “Eastern Tiger Swallowtail” (family, Papilionidae; subfamily, Papilioninae); http://www.butterfliesandmoths.org/sighting_details/907757
(I’m leaving the uncertainty in the title since I wasn’t certain at the time of posting.)
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...