SPOTTED SPREADWING
Spotted Spreadwing. These small damselflies have a distinctive "stepped" pattern on the upper edge of the yellow patch on the thorax. They also have two small dark spots underneath the yellow patch.
This is what a Spotted Spreadwing looks like from above. However, for identification purposes, it is much more useful to see the sides of the thorax.
This is a slightly better view of the dark spots below the yellow patch. These spots are distinctive, but sometimes difficult to see in photos.
This is a mated pair of Spotted Spreadwings. I find this species in good numbers at Cox Arboretum and Grant Park, and also at Germantown MetroPark and Beavercreek Wildlife Area. They typically fly in the fall, starting in August. I have seen them as late as November 19th!
Another close-up view of the spots below the thorax.