. "Coenagrion interrogatum (Hagen in Selys 1876)" . . . "Animalia" . "Odonata" . "Coenagrionidae" . "Insecta" . . "(Hagen in Selys 1876)" . . . "Arthropoda" . . . . . . "Coenagrion interrogatum" . . . "Subarctic Bluet" . "Coenagrion" . . .