Sweat bee on Cirsium occidentale var. occidentale - Agapostemon texanus -
San Clemente Island, Los Angeles County, California, USA April 18, 2012 Size: About 10mm
I presume this is an Augochlorella sp. (Hymenoptera: Halictidae), metallic green sweat bee, but would like professional opinion, if possible. It is on the flowers of a native western cobwebby thistle (Cirsium occidentale var. occidentale).