This one is giving me a headache ;-) With the keys in Lencioni, it seems to be a coenagrionid, but I keep finding it hard to judge the wing venation from the photo. So I am not sure... It is hard to see which veins belong in which wing. So maybe it is Protoneuridae after all...

And then with the key to Coenagrionidae it is getting even harder.
Leptagrion?

Photographed at the dry streambed on the Haffer trail.