Description

One of the most common damselflies in the UK.

Male: blue and black with a mushroom/button shaped mark on segment 2 (below the wing base).

Female: black and either blue or dull green with a thistle shaped mark on segment 2 (below the wing base).

 

 

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Latin NameEnallagma cyathigerum
Habitat

It occurs in most waters and on large lakes is usually the most abundant species.

Will frequent open water more than other blue damselflies.

Status & Distribution

Abundant throughout the British Isles.

Similar Species

Easily confused with other members of the genus Coenagrion.

Can be distinguished by:

  • Thick antehumeral stripes on the thorax.
  • Males: mushroom/button marking on segment 2 below the wing base.
Species GroupDamselflies
Identification Notes
  • Length: 32mm
  • Thick antehumeral stripes on the back of the thorax.
  • Male: blue and black with a mushroom/button shaped mark on segment 2 (below the wing base).
  • Female: black and either blue or dull green. A thistle shaped mark on segment 2 (below the wing base) and  rocket shaped markings down the abdomen.
Flight PeriodCommon Blue Damselfly
Larval Information

No spotting on the back of the head.

Three thin horizontal stripes on caudal lamellae (sometimes very faint).