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HI Ruud


Nice pictures of the action !

So, question: were the eggs actually laid on the hosts, or on the plant nearby the host. It would seem the last ?
In that case, we are probably dealing with a Goniini.

Otherwise, it is still difficult to give a name.
the praealar bristle seems long, best seen in second picture. It is out of focus, but it is long. (it seemed short in the first).
the general habitus reminds me of Myxexoristops blondeli.
Good news: this is a Goniini on Symphyta.
Bad news: it seems the the formation of the bristles on the humeri doesn't fit. Maybe I'm tricked by the view of angle.

And, I would like to see the middle tibia: does it have 1 or more anterodorsal setae ?
That would help


Greetings

Theo