Flight period: May to July (occasionally also April and early August)
A medium sized dragonfly with blue eyes, sometimes dusky patches on the wing tips and a broad abdomen. Synchronised emergence usually begins towards the end of May.
Male: pale blue pruinescence on the abdomen
Female and immatures: highly distinctive with vivid orange colouration, black triangular shaped markings on the upper surface of each abdominal segment and dark bases to the wings.