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Common Blue Damselfly

The Common Blue (Enallagma cyathigerum) is one of the most abundant damselflies in Norfolk. Almost any body of water will have a resident population of this species, from garden ponds to rivers, and it may occur on large numbers. At Whitlingham Broad for example, there are over 500 adults flying each day throughout the season.

Picture of Common Blue
Photo:J Stutely

Identification

Can be confused with the Azure and Variable damselflies. This page gives the differences. Frequently seen as pale blue threads drifting at knee height in meadows close to water, look for them also on banks of nettles or brambles where they hunt small flies and aphids. Like nearly all dragonflies, the newly emerged adults fly away from water and the threat of conflict with mature males and do not return until sexually mature. Common blues spend this time together in nurseries - usually an insect-rich environment about 100m+ away. In Whitlingham for instance, the young adults gather on the rear of the picnic field, under the trees; while those emerging at Trowse flower meadow use the far end of Trowse wood.

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