Identification key to male hawker dragonflies

Aeshna juncea Aeshna grandis Anax imperator
Body black with paired blue, yellow or green markings (4 species)
Body predominantly brown, blue marking restricted to top of abdomen (3 species)
Emperor (Anax imperator) Apple-green thorax, abdomen sky blue with black line on dorsum

Nelson, B., Thompson, R. & Morrow, C., 2000 (August 15). [In] DragonflyIreland

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