The Lure of the Oregano

The oregano is in luscious full bloom right now, and it's positively abuzz with flying creatures of various kinds.

Three of them managed to get into this shot!

I'll try to identify the tiny butterfly and come back to post it's name, unless one of you naturalists can beat me to it?

PS- Horrigans is right, it's a Silvery Checkerspot!