I have found some pictures of cuckoo wasps from this year. I have tried to determine them, so I will be happy for ID. I know some of them are difficult to determine without characters on abdomen etc.
Beatiful pictures! The two first marked Croatia should be a Chrysis ruddii female (long white pubescence, red/bronze on legs and mesosoma), but the lower ones I cannot help you with.
Alex is right, I agree on the identification of the first 2 specimens (C. ruddii), but I cannot add anything else on the remaining pictures ... only C. ignita group.