Hedychridium mediocrum Linsenmaier. It's also quite common and females have non metallic abdomen and genae (in dorsal view) subparallel to slighlty divergent (not rounde as in H. roseumand H. valesiense females)
Hello, I found this small female Elampini, H. roseum group, in a way in the grassland of Chaudanne (Besançon). I think it is Hedychridiumroseumroseum (not nanum, not chloropygum, not caputaureum?), but not sure (females valesianum ...
... in the same station : Chrysis analis (abundant !), bicolor/illigeri, Hedychridiumroseumroseum, Pseudomalus auratus. Sphecid wasps found in the station : Ammophila campestris ...
... sphecid, as Tachysphex, Miscophus or Astatinae some minutes before this Chrysid, & Lasioglossum on flowers). Why cupratum : colouration (exit roseum group, remark : scutum & pronotum are more red than in the pictures) ; big puncture (not as coriaceum) ; Metallic tibia (green with golden ...
Hedychridiumroseum would make sense - there were a number of Astata (probably boops picea but I have yet to confirm) on the same nectar source (in this case Cachrys trifida). Are all the members of this group cleptoparasites of Astata?