Alan Williams / Azure Damselfly (Coenagrion puella) resting on leaf, Lake Burton RSPB Wetlands Reserve, Cheshire, UK, June.

Colin Varndell / Azure damselfly (Coenagrion puella) male at rest. Dorset, UK June.

Robert Thompson / Variable damselfly (Coenagrion pulchellum) Brackagh Moss Natural Nature Reserve, Portadown, County Armagh. Northern Ireland, June.

Russell Cooper / Male Azure (Coenagrion puella) damselfly resting on a leaf. May. South-west London. UK

David Kjaer / Variable damselfly (Coenagrion pulchellum) male, Greylake RSPB Reserve, Somerset, UK, June.

David Kjaer / Variable damselfly (Coenagrion pulchellum) male and female mating, Greylake RSPB Reserve, Somerset, UK, June.

Ross Hoddinott / Azure damselfly (Coenagrion puella) covered in water droplets resting on heather, Westhay, Somerset Levels, Somerset, UK, August.

Jan Hamrsky / Azure damselfly nymph (Coenagrion puella) Europe, controlled conditions

Ross Hoddinott / Azure damselfly (Coenagrion puella) covered in water droplets resting on heather, Westhay, Somerset Levels, Somerset, UK, August.

Jussi Murtosaari / Variable Damselfly (Coenagrion pulchellum) male and female flying in tandem above water, South Karelia, southern Finland, June.

Andy Sands / Azure damselfly (Coenagrion puella) adult 20 minutes after emerging from larval case on Sedge stem, East Sussex, England, UK. May. Focus stacked.

Andy Sands / Azure damselfly Emerging (Coenagrion puella) adult just emerged from larval case on Sedge stem, East Sussex, England, UK. May. Focus stacked.