We have this one in Sacramento and others also. Found this one sleeping in the Arctotis. Hawk Moth or Sphinx Moth are the typical common name. There are however Hummingbird Moths. You can see why in this photo. There are videos on the web of them that are quite captivating. The caterpillar I found this week was chowing down on leave of Brugmansia.
White-lined sphinx (Hyles lineata)
Carolina sphinx
Manduca sexta (Linnaeus, 1763)
Hummingbird Moth (Hemaris sp.)
Carolina sphinx
