Most insects wouldn't like to see the face of a spider up close. But there's also a few faces that a spider doesn't want to see up close. And this is one of them, the spider wasp, or 'spider slayer' as it is called in Dutch.
They catch spiders with a paralysing sting. The spider is then placed next to an egg of the wasp. When the egg develops into a larva, the latter starts to consume the still alive spider...
This 100 image stack was taken with the JML 21mm with about 4cm's extension on the bellows.
The widest part of this wasps face is just under 2 millimeters.