Identification key to male hawker dragonflies
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
http://www.ulstermuseum.org.uk/dragonflyireland/
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