Busy

I went out this morning to try to photograph wasps, but I was having a hard time.  Then I noticed these wonderful bees:

 

The bees quickly entered burrows, so they were difficult to photograph.  Eventually I found one digging, and caught a glimpse of its beautiful green eyes:

 

And then I spotted a female outside of a burrow:

 

And a male perched on a flower stem (below).  Note his bright yellow face (it made the male easy to follow even when it was flying):

 

I'm pretty sure this is Anthophora californica.  It's the first time I've photographed this bee.  [You might remember that I showed a different species of Anthophora in 2013 — see the post called "Turrets and Tongues".]

Eventually, I also managed to photograph the wasp.  I need to ask for some help with the identification, but I think it might be a "cutworm wasp," perhaps Podalonia (argentifrons?)?  Impressively, the wasp was carrying a large caterpillar (perhaps a cutworm!):

 

And here's one more bonus picture.  I'm not sure about the identity of this pretty little bee, but I'm wondering if it's a species of Andrena?  This bee was so small and so fast, and the pollen on its legs was so dense and so bright, it looked as if a clump of pollen was flying among the vegetation!  UPDATE (30 May 2016): Robbin Thorp has confirmed this as Lasioglossum sp.