Click on images to enlarge
Flight Period: June to July (occasionally May and August)
Both sexes have bright green undersides to the eyes and face and a coenagrion spur.
Male: segment 2 has a rather variable, spear-head shaped spot linked rather like the cards ♠ "Spades" symbol (see right). Segment 8 and segment 9 are blue except for 2 small black spots on S9.
Female: clear green from the side but mostly black from above.
Antennae with 6 segments and prominant spotting on the head. Caudal lamellae long and narrow with distinct, dark nodal constriction and dark nodal line.
This species is restricted in the UK to sedge-fringed lochans in the Scottish Highlands.
Status & Distribution
Rare and local. This is a Red Data Book species.
This species is easily confused with the other members of the genus Coenagrion and with the Common Blue Damselfly Enallagma cyathigerum . Look at S2 (on the males) for distinguishing characters. Northern Damselfly is a weak flyer and has a very restricted range. The females can be particularly tricky to distinguish apart.