The Big Darby is a state and federally listed Scenic River, known for its clean waters and the rare mussels and fish within. Dragonflies are also a bioindicator of water quality, as some species rely on pristine waters for their larval or nymph phase.
American Rubyspot is well known from the vegetated banks of the Darby. These damselflies are easily compared to the Ebony Jewelwing in size and shape, and both species' females show a white dot at the stigma.
Male American Rubyspots are easily identified by smokey colored wing which sports a bright ruby red "spot" at the base. Rubyspots are a bit of a botanical damselfly as well, often affiliated with Water Willow, Justicia americana. In fact, I have never seen am American Rubyspot when it wasn't on Water Willow.