Green Sweat Bee
Agapostemon texanus
Image taken in Phoenix, Maricopa Co., Arizona. June 27, 2006. This photo is hosted at Wikimedia where there are more Halictidae.
Halictidae -- Sweat Bee Family
This colorful bee is a male and lacks a stinger. The males do not gather pollen nor do they help in the construction of the nests. Agapostemon texanus is found across much of the United States.
Some species of Halictidae are attracted to sweaty bodies and will take the sweat for its salt content. Agostemon bees rarely do this. This species is common in Phoenix, Arizona where it visits the flowers of various shrubs such as lantana.