Green halictid on gumweed - Augochlorella aurata -
6 miles NW Lyons, Boulder County, Colorado, USA July 27, 2014 Size: ~ 5 mm
This small brilliant green metallic halictid female is gathering pollen from Gumweed (Grindelia squarrosa) in the foothills at about ~6400'. Although I was not able to capture wing venation, one photo I have does show a pointed marginal cell. Augochlorella possibly?