Ancistrocerus sp. (Potter Wasp sp.)

Description:

There are 12 different Ancistrocerus species in The Netherlands of which 6 are quite rare.
The other 6 are very difficult (if not impossible) to tell apart from a photo.

1st photo: In my yard, Hilversum, The Netherlands, 1 September 2012
2nd & 3rd photo: 's Graveland, The Netherlands, 28 August 2012
4th & 5th photo: In my yard, Hilversum, The Netherlands, 3 September 2018

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