I am embarrassed by the poor photos, it was very windy. Note date. This chrysidid came briefly to feed on what I think is Lotus dorycnium. The wasp was so dark it took me some time to distinguish it from the many flies and other insects on the same plant. The abdomen has a yellow-green sheen in the photo but this was less evident in life. The head and mesosoma were dark blue-black as in the photos. I have looked at the thumbnails at this site and elsewhere online but have not yet found a similar example. I looked for it at the same location on several days afterwards but without success.
The photos are not good but is it possible to suggest a potential identification? Thanks for any advice!
Brian