I wonder?! The one (one) time I saw a hummingbird moth with my own eyes, I thought its wings were opaque -- then again, they move so fast just like a hummingbird, I am probably wrong. (The one I saw was green as well, not bee-like, more like a mimic of an emerald hummingbird of some type).

There is at least one species with clear wings though but the edges and veins aren't?