The Rosa rugosa alba has it all this week--beetles, bees, ants, spiders, and more stuff I can't even see. What is most striking are the very beautiful goldenrod spiders Misumena vatia, a kind of crab spider.
Holding on is a male spider--not in position for mating, is my guess. The female is not a large spider; the male is tiny. I could only really see the dark legs a thorax without assistance. I don't know if they're done mating, or if he's just guarding her. The picture at the top of the post is of this same female, taken later in the day, after the male had left, or whatever. Maybe being so small gives him a better chance of avoiding being eaten by her. Below a closer view of the male.
The most aggravating activity is that of the rose chafers (on the left in the first picture), constantly nibbling on the blossoms, sometimes before they have even opened, and constantly mating, guaranteeing more chafers. (Excellent chafer picture here)
A second spider is guarding eggs right now--the eggs are protected wrapped in a silken cocoon with a leaf wrapped around that. According to this website, the spider won't eat while she guards the eggs, and will die after they hatch. But this girl was eating a rose chafer when I first came upon her. I tried to interest her in another later in the day, but she didn't bite. In the picture below, the whitish surface the spider is sitting on is her egg cocoon.