Hello,
Bernard Mallet, a naturalist, have photographed this Chrysididae, and wanted the identity.
I think it is Pseudomalus violaceus, but I have no view many specimens of Omalus- Pseudomalus-Philoctetes (only 2 species : O. puncticollis & P. auratus).
What do you think about the specimen ?
Locality : France, Paris region (Eaubonne, 95), August, 9, 2017.
size = +/- 6mm
Jérôme