Gomphus graslinellus
male
Stockade Lake, Custer Co., SD; 21 Jul 1998
Gomphus graslinellus
male
Stockade Lake, Custer Co., SD; 21 Jul 1998
Gomphus graslinellus
male
Stockade Lake, Custer Co., SD; 21 Jul 1998
Gomphus graslinellus
male
Stockade Lake, Custer Co., SD; 21 Jul 1998