Monarch
Danaus plexippus Kakahu or Kahuku
Native (flew/blew from N. America).
Host plants
Milkweed, e.g. swan plant (Gomphocarpus fruticosus), giant swan plant (G. physocarpus), and tropical milkweed (Asclepias curassavica).
Yellow admiral
Vanessa itea Kahukōwhai
Native to NZ and Australia as well as Lord