"Arthropoda" . "(Walsh 1863)" . "Odonata" . "Animalia" . . . "Enallagma hageni" . . . . . . . . . "Insecta" . "Enallagma" . "Coenagrionidae" . . . . "Hagen's Bluet" . . . . "Enallagma hageni (Walsh 1863)" .