THE NYMPHS OF COENAGRION INTERROGATUM AND C. RESOLUTUM (ZYGOPTERA: COENAGRIONIDAE) FROM THE BOREAL FOREST OF ALBERTA, CANADA

Abstract The nymph of Coenagrion interrogatum (Hagen) is described for the first time and the nymph of C . resolutum (Hagen) is redescribed. A species key to the nymphs of Coenagrion in Alberta is presented along with characters to separate Coenagrion nymphs from Enallagma nymphs.