Agrion jouvencelle (fr) or Common coenagrion (en) Coenagrion puella. Male.
There ya go, for anyone interested and who might be passing this way. It is identified.
Photographed at the pond in Parc de Neuvecelle. A day that inspired me to get out and run off some of these kilos, pounds, stones; call them what you will, they add up to too much weight being carried around for no good reason. So I did the parcours de santé up and around the pond and marais doing the exercises that one finds at various points along the course.
I doubt I lost any weight doing it, but at least the mojito before, and the Côtes Du Rhone with, dinner went down well.