Blue-tailed Damselflies (Ischnura elegans) in a mating wheel
Common Blue (Polyommatus icarus | Hauhechel-Bläuling)
Black-tailed Skimmer ♂ (Orthetrum cancellatum) shortly after emergence. He's still orange at that early stage, but he will change his color to blue soon! Großer Blaupfeil kurz nach der Metamorphose