Length: 33mm

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.


Where to See

Latin NameCoenagrion puella

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.

Similar 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. The females can be particularly tricky to distinguish apart.

Species GroupDamselflies
Identification Notes
  • Very similar to Common Blue Damselfly below but can be separated in both sexes by blue antehumeral stripe on thorax thinner than black line below and black spur on side of thorax
  • On male look for ‘beer glass’ mark on S2 and ‘bow tie’ on S10
  • Found on small ponds and watercourses
  • Late April-late August
Flight PeriodAzure Damselfly
Larval Information

Spotting on the back of the head (one of several species). Easily confused with Variable Damselfly larvae.