caterpillar (larva of Hawaiian scotorythra geometer moth)

Spotted dining on koa leaves. For several days I had noticed evidence of herbivory--pieces of young koa leaves--on the ground below a koa (Acacia koa) tree in my yard. I looked about for the cause, but failed to see anything. I decided to look after dark. At first, I saw nothing, but as I was about to give up, I spotted a caterpillar, probably a moth larva. I took its picture in situ (the first image) and then removed it from its dinner. I took it inside to try to get better pics. After thrashing violently when being removed from the tree, it chose to curl up, not a good pose for the pictures I wanted. Eventually, I went outside, got a pruned koa branch, brought it inside, and put the creature on it, thinking it might start moving. It didn't. I took a picture anyway (the second image), which on inspection shows the spiracles (two per segment, one on each side) along its length. They are used for respiration. I decided to house the caterpillar in a box overnight before releasing it in a different location in the morning. For some reason, when put inside the box, it straightened out, so I took the third picture.