There are several different genera represented by this category. They fall into two main groups: bright green and dark blue.
Bright green metallic
Note: distinguishing between Augochlora, Augochlorella, and Augochloropsis in the field is quite challenging if you’re not prepared for it. Collectively, bees in these three genera belong to the tribe Augochlorini or, colloquially, the shiny green bees. If you are starting out bee watching, it is totally fine to leave your identification at Augochlorini.

Augochloropsis