This unique species is the only one within its genus. It is one of the Pond Damsels, family Coenagrionidae. Some other genus in the family include the bluets, dancers, forktails, and red damsels. Most people would look at this damselfly and think that it was a bluet. If you take a closer look through, you will see that there are a few differences. For one, when the damsel is at rest it will hold its wings apart like a spreadwing would. Also unlike any bluet, it has a patch of yellow on the lower sides of the thorax. Males have blue sides on the thorax with a lower yellow patch. Males also have segments 8 & 9 almost completely blue. In females and juvenile males the blue is typically replaced with a light brown or gray, but a blue form female does exist.
If you would like to find one, you should search in vegetation around calm water at streams, clean lakes, and ponds in early spring. It has also been found in bogs and fens. My early date is May 26 an the late date is June 9. I have found it at three locations, the Jamestown Audubon and the pond at the Rodger Tory Peterson Institute in Chautauqua county and locations in Allegany State Park including Red House lake (in Cattaraugus county).