The splendid clubtail has a club at end of the black abdomen that seems small compared to other clubtails. The club has large yellow lateral spots. Length of the body varying from 2.6 to 2.7 inches making this the largest Gomphurus in Wisconsin. This yellow-green dragonfly has black shoulder and thoracic stripes and black legs. The face has a narrow black facial cross-line with bright green eyes. Clubtail species are very similar to each other in some aspects, careful inspection is needed to identify them.
The splendid clubtail prefers clear, fast-moving, usually rocky rivers with sandy gravel and silt among rocks in eastern United States. Uncommon in Wisconsin, it is widely distributed in northern Wisconsin.
Late May to mid-July in Wisconsin.