Female Common Blue Damselfly (Enallagma cyathigerum)
Thanks to #Dave Roberts# and Chris@184 for the ID on this one!
Our most common damselfly, the Common Blue is found around almost any waterbody and can also be found away from breeding sites in grassland and woodland. It is s a regular visitor to gardens and is on the wing from the end of May through to September. The common blue damselfly is an aggressive species: males will defend their females as they lay their eggs, both from their own kind and other species. As with other damselflies, when common blues mate they form a 'mating wheel' in which the male clasps the female by the neck and she bends her body around to his reproductive organs.