The Azure Damselfly – Coenagrion puella, is a common and often seen damselfly. One of several similar looking blue damselflies, but its appearance can be variable.
|Coenagrionidae||Blue or red Damselflies|
An abundant damselfly, one of several similar species with blue and black markings. The Azure has some distinctive features that help identification.
The male has a predominantly blue body with black markings and features a characteristic ‘U’ marking on the second segment. The female has both green and dark (blue) forms.
Both the male and female have narrow shoulder stripes on the side of the thorax, helping separate this species from the most similar Common Blue Damselfly – Enallagma cyathigerum.
Pterosgtima are dark. Unlike most damselflies, the Azure sometimes rests with its wings held somewhat open, rather than closed.
Detail of the characteristic ‘U’ marking on the male second segment:
Overall length: 33 – 35 mm
Wings: 16 – 23 mm
There are several other broadly similar species that might cause some confusion:
Favours ponds and slow rivers with plenty of vegetation. Can often be seen well away from water as they feed.
Common throughout the region. I’ve encountered many along the River Great Ouse at Kempston and also at Felmersham NR and Marston Thrift, but you can expect to find them wherever suitable breeding waters are present.
Visible from late April to early September, peaking May to July.
External links for Azure Damselfly – Coenagrion puella:
British Dragonfly Society | Wikipedia