There are six different species within de family of Sphecidae (Thread-waisted Wasps) that occur in The Netherlands; three within the genus Ammophila and three within the genus Podalonia.
It seems that a few other genera, occuring in other parts of Europe, will soon establish themselves in The Netherlands as well.
The three Ammophila species look very similar but Ammophila sabulosa is the most common one.

This is a male.

Air Force Base, Soesterberg, The Netherlands, 10 August 2018