Few days ago my wife started complaining that something is eating hers precious lemons on the lanai (she is growing them from seeds and they are ~10-25cm tall so far). And she found the perpetrator but I didn't have the time to take a photo of it's original shape/colors. The ID was very easy - we have just one species of Swallowtail in Hawaii:
Papilio xhuthus. Just one day later it changed it's skin (obviously the 4th change when they get green and somewhat different shape: before that they are looking like bird poops
- you can find photos on the Internet!).
Not really good shot (after work, low light in windy weather...) but the caterpillar is really nice!