Brugmansias; are they host to certain moths? Please I.D.

I've posted these on bugs' I.D. forum. But if anyone are familiar with these type of moths, please help I.D. They stay stationary on my young brug's cutting. I've also vedio a clip of 2 mins. Can't wait until DG's vedio feature is up and running, so I can send in the clip.

Ahh, I've a white brug that's blooming nearby. Bet they're active during the night, and camping out nearby during the day. Beauty moth....
The pot's is a 4" pot that the little plant is in. (for scale -- of their sizes).

The moths were I.D'ed by Claypa; Antheraea polyphemus. Then this would be the moths that pollinate your blossoms? Humm, they're too big to get to the stigma, aren't they? (so much I knew about brug's pollination)!

These moths have vestigial mouth parts and don't eat as adults.
http://en.wikipedia.org/wiki/Antheraea_polyphemus

I've seen sphinx moths hovering and entering some of the Brug blooms. At first, I thought they were hummingbirds until one stopped on a twig.
http://en.wikipedia.org/wiki/Hawk_moth

They have been around here too in the evening... scared the begeezers outta me when one came too close.

Thanks Betty;
Open my eyes to more beauties there are in my garden! I've seen the hawkmoth (very much like hummingbird flying pattern) hoovering around my Pentas in blooms. Greatly appreciate your sharing. Though, they have no direct relation with my brugs. I'm glad they're out there. :-)