Eastern Tiger Swallowtail (Dark Phase)

Fyn Kynd, if this is indeed a Tiger Swallowtail as I surmise then you are incorrect, as typical female coloration of a Eastern Tiger Swallowtail is the standard yellow and black but features prominent blue at the base of the hindwing that the male mostly lacks. http://www.butterfliesandmoths.org/species/Papilio-glaucus

This is a female, though not a "dark phase", just typical female coloration.

I am sure this is a female dark phase Tiger Swallowtail, her size, how she holds her wings, the lack of a yellow border at the top of the blue and the sheer amount of blue on the wings not what looks to be so faint yellow on the edge of the forewing one sometimes sees in these cases are all signs she is a Tiger.