Just look at those gorgeous green eyes! 

Swift River Cruiser, perched high in a tree. This species is fairly common in our area. I see them flying at numerous locations along the Great and Little Miami Rivers,  Germantown MetroPark, Twin Creek MetroPark, Caesar Creek, and several other locations. But this is one of our most difficult dragonfly species to photograph. They rarely perch, and when they do, it is usually high in a tree. 

This is a newly-emerged, teneral Swift River Cruiser. I found it early in the morning, on the banks of the Great Miami River near Miamisburg. Swift River Cruisers fly from June through early September. 

Swift River Cruisers have brilliant green eyes and a single yellow stripe on the side of the thorax. They also have a bright yellow spot on the top of the abdomen (just above the club). There are two subspecies of Swift River Cruisers; the one in our area (sometimes called the Illinois River Cruiser) is less brightly marked than the Swift River Cruisers in the south. 

Swift River Cruiser, photographed just south of Crain's Run Nature Park (near Miamisburg). These large dragonflies are swift fliers and patrol medium to large rivers and creeks