The largest dragonfly in the United States is Anax walsinghami (Giant Darner) which is found from far west Texas, westward into northern California. Its wingspan is not too impressive when compared to some other U.S. dragonflies, however, its total length of approximately 110mm (4.3 inches) exceeds that of its nearest rival, the Regal Darner (Coryphaeschna ingens), by almost 18mm (0.7 inches).