Orange and white with falcate tips

Not much time tonight, but here's an interesting moth that appeared at our house in Sebastopol a few nights ago. 

 

The orange coloration was really striking, especially in contrast to the white hindwings.

 

And note the falcate, or sickled-shaped, tips to the forewings.

 

I'm wondering if it could be a species of Drepanulatrix?