Click on images to enlarge
Flight Period: May to September (occasionally April)
Both sexes have a coenagrion spur on the side of the thorax and a thin blue shoulder stripe.
Male: characteristic flat-bottomed "U" shaped mark on segment 2. Segment 8 is blue and segment 9 has black markings towards the rear.
Female: green or pale blue with extensive black markings.
Small ponds and streams and sometimes at the edges of larger water bodies..
Status & Distribution
Very common throughout the British Isles except the northern half of Scotland.
Spotting on the back of the head (one of several species). Easily confused with Variable Damselfly larvae.
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. The females can be particularly tricky to distinguish apart.