In the backround you can see a Misumena Vatia(white spider).
I didn't even notice this crab spider until I looked at the photo. An example of aggressive mimicry.
The beetle got away just in time: www.inaturalist.org/observations/3281874
Cvetni pajek (Misumena vatia)
It was found hanging from a tree. It was very hard to spot due to the fact that is was so tiny. I was able to see it because the bright yellow color.
Misumena vatia is a species of crab spider with holarctic distribution. In North America, where it is the largest and best-known flower spider, it is called the goldenrod crab spider or flower (crab) spider, because it is commonly found hunting in goldenrod sprays in the autumn.