What kind of moth is this?

This

guy

Just flew in my window a few minutes ago, making so much noise with his robust and sizeable self that I thought it was one of the cats. He is about 3" long, and 5" wide.

He kept perching places and vibrating his wings blindingly fast.

Tell me about him?

White-lined Sphinx Moth. Google will tell you far more than we can

We can tell you that thing is mothzilla.

That would be Mothra.

That’s him! Funny, I was going to describe the moth as being not much smaller than a hummingbird, and apparently the White-Lined Sphinx Moth is sometimes also called the hummingbird moth.

(Moth and butterfly taxonomy amuses me. So meticulously descriptive and formal. Reminds me of a band back in the 1980s who did a song called “Great Spangled Fritillary.”)

Cocteau Twins. They did a whole vaguely-butterfly-themed EP

We had a luna moth drop by the other day!

One of my faves, loved it when LUNESTA™ used one in their TV ads.

That’s one I never had in my childhood collection. Not from lack of trying.

I believe in their previous life, they are the big, green caterpillars that consume your tomato plants.

You’re describing more than one larva. The most common is the tomato hornworm, *Manduca quinquemaculata, *which becomes the hawk moth.

I saw a white-lined sphinx moth caterpillar in March, munching on the wildflowers of the superbloom in Death Valley. It was the biggest animal in probably a square mile!