Categories DavidCommon blue damsel flies on a leaf, mating Post author By David Post date 2 July 2015 A pair of common blue damsel flies resting on a pondside leaf as they mated, their abdomens forming a contorted heart shape. The male is predominantly blue in colour, the female green. ← Common blue damsel fly, male, Packhorse Bridge LNR → Shadow of a damsel fly