The Epaulet Skimmer is a southern European and African dragonfly. A little similar to the Keeled Skimmer of the UK, it has a narrow elongated body with central raised "keel".
Above is the attractive pale blue male with turquoise eyes, but the "epaulet" marking on the thorax that gives it its name is not often clear and darkens with age.
The white "epaulet" is shown on the teneral male above. Female Epaulet Skimmers are hard to find, but are similar to the teneral males, but completely yellow ochre in colour.
This male has also found that females are hard to find and has coupled with a white-sided Red-veined Dropwing.
She rejected him
He sits on the ground on warm stone or concrete a lot rather than the high vantage point plants/twigs favoured by darters.