Emerald Damselfly
Lestes sponsa
This common species needs great care to separate from the very rare Scarce Emerald, both species being predominantly metallic green.
Comparisons of details such as the extent of the powdery-blue on the abdominal segments of the males and the shape of the females first abdominal segments have to be noted, as well as the shape of the pterostigma in the wings. Even then, positive identification can only be confirmed by examination of the genitalia, so a good field guide would need to be referred to, or expert help sought.
This is a common and widespread species nationally, utilising a wide range of habitats, tolerating eutrophic and brackish conditions, although it shows a preference for shallow, well vegetated areas. Its apparent absence from the south-west and north-east of the county is something of a mystery. Records from these areas would be most useful.
Distribution map
Male
Female
