Insect and Spider Identification: CLOSED: Caterpillar identification, 1 by archiepelago

archiepelago wrote:
I found the attached little guy eating my Pentas here in New Orleans this morning. He had two others with him. Yesterday I saw a similar one but he was more green. They all appear to be about 3 inches long. They appear to be planning to eat three medium sized bushes. They did the same thing last year but I did not catch them in the act and only had the empty Pentas to show. They just eat the leaves not the stems. They have ignored the adjacent Vincas (Periwinkles).



I thought it was a Palamedes swallowtail but the internet photos didn't quite match up. Your thoughts? Anyone?