The twelve-spotted skimmer is named after the 3 black spots on each wing – for a total of 12 black spots. They are often seen perched on twigs by the water’s edge. This skimmer is a male. The females have a yellowish body with a brown/black stripe down the center.
Found throughout most of the United States and much of Canada. This photo was taken at Morton Arboretum, in Lisle IL.