Yesterday I observed this wasp in the Netherlands (for location see http://waarneming.nl/waarneming/view/114230543).
I knocked him out of a Hedera helix.
The size is about 2 mm.
On a Dutch forum (http://forum.waarneming.nl/smf/index.php?topic=348539.0) was Microterys speciosus suggested. But this species does not exist in the Netherlands.
So my question is: Is this an Microterys speciosus or an other species.