Gramma, since you are interested in learning more about native bees, you might like a book called "Attracting Native Pollinators". It's a favorite of mine and has lots of info (that's where I got the info about the Ceratina Bees).
I ordered mine on line a few years ago from The Xerces Society:
http://www.xerces.org/announci...
The Xerces Society does good work with bring awareness to native pollinators.
