This is another Polydamas Swallowtail like I showed before my trip, but the underside of his wings here are more obviously brown than the others which were dominated by black. It could be because I had better light, but it still seems somewhat like a different species. Polydamas Swallowtail (butterfliesandmoths.org) for descriptions, locations, etc. and you can compare all of my many photos of this species in my Polydamas Swallowtail Gallery. And it is interesting to note that all of my photos were made in my garden.