Many Gomphidae are found along rivers. The cobra clubtail pictured here is typically a river species. The nymphs prefer large rivers usually with a sandy bottom. I photographed this dragonfly at Damn Number One on the Mississippi River. The tip of the cobra clubtail is larger then most other clubtails found in this area. Only the skillet clubtail has a wider tip on their abdomen. That makes the cobra clubtail one of the easier clubtails to identify.