Pronghorn Clubtail (Gomphus graslinellus)

Male. Toppenish NWR, Washington. June 18, 2014.

Female. Toppenish NWR, Yakima County, Washington. June 26, 2010.

Female abdomen. Toppenish NWR, Washington. June 18, 2014.

Note: This species is only reported from Toppenish NWR in our region. The amount of yellow in the lower abdomen is a key characteristic. The Columbia Clubtail occurs on the lower Yakima river.