Luna Moth: endangered species

While out of the city on the weekend recently, I spotted a huge insect flitting against the window at night. In the morning, I discovered it was a Luna Moth: an exceptionally large and visually striking month quite unlike the normal grey ones we are accustomed to. These moths are a strong green, the color of new leaves, and are up to 8-11 cm across.

At night it was a real shock as I had been quietly reading by the window and it made a lot of noise out of the blue. In the daytime, it was stunning and provoked a very enthusiastic response from Natasha.

They are also endangered species according to my Petersen Field Guide to insects, although Wikipedia claims they are common. I think the rarity is related to specific parts of its range.

When I saw it flitting against the window that night I turned off the light, but it landed and apparently slept (I hope it was sleeping) nearby. The one on our window flew away eventually (or at least it was gone a week later).

In addition to the size and color, the extensive antenna are notable. As an aside, the luna moth is apparently unable to hear sound and does not eat in the adult form.