I found this beautiful Saturniid moth (oomizuao) hanging onto the front of a vending machine at the side of a mountain road (near Inunaki Dam). Apparently the adults lack functioning mouthparts, so they only live for a couple of weeks. What a pity that they spend their two weeks of life bumping into the lights of roadside vending machines!
This species (Actias artemis) looks very similar to the Luna Moth (Actias luna) that is found in North America. You can see a picture here.
Actias artemis = oomizuao