It is a black swallowtail. Do you know how to look up photos on an iPhone? After you take a photo and it is in your photos library, tap it to isolate it, then swipe it up. You will see a menu that says, in this case, "Look up bug". Tap it ,and it will identify the bug. I use this mostly to identify plants, but it works for animals too. I took a shot of the screen to identify this for you. You can use it to identify images that you took with another camera with this method.
