Spoonwings

Barco De Avila, Sierra De Gredos, España (2012).
Nemoptera bipennis is a species of slow flying insect in the family Nemopteridae or spoonwings. Their flight is delicate and they have a circling flight to avoid walls when they are trapped indoors. The long streamer is conspicuous when the insects are flying and these are the elongated and spatulate hindwings.
Male Nemopterids have a bulla on the wing usually along the margin or wing base that is used to disperse pheromone
It is found in Spain, Portugal and France. It lives in calcareous areas with low vegetation. I have seen this one near a river.