Description

A robust, dark Damselfly.

Male: red eyes and blue bands at the end of the abdomen.

Female: brown-red eyes and green coloration on the sides of the thorax.

 

 

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Latin NameErythromma najas
Habitat

Found in lakes, gravel pits, canals and slow-flowing rivers.

The males often sit on water lily leaves defending their leaf from other males.

 

Status & Distribution

Locally common in southern England and the Welsh Borders.

Similar Species

Small Red-eyed Damselfly

  • smaller
  • male: black x mark on the end of the abdomen
  • female: has complete antehumeral stripes on the thorax

Blue-tailed Damselfly

  • eyes lack red coloration
  • colour banding on abdomen higher up on segment 8.

Scarce Blue-tailed Damselfly

  • eyes lack red coloration
  • colour banding on abdomen higher up on segment 8 and 9.

 

Species GroupDamselflies
Identification Notes
  • Length: 35mm
  • pale pterostigma (wing spots)
  • mostly black in coloration.
  • Male: red eyes. Abdomen segments 1 (top) and 9-10 (bottom) are blue.
  • Female: brown-red eyes. Abdomen dark on top and green on the bottom. Short yellow antehumeral stripes on the back of the thorax.
Flight PeriodRed-eyed Damselfly
Larval Information

Long abdomen but medium-sized caudal lamellae and a small head.

Distinctive nodal notch on the caudal lamellae and three dark bands.