Crab and a puzzler!

[Hedera]

The largest Misumena I have seen:
and a puzzling thingy:

[frits_b]

Wow, she's obviously pregnant. Did you collect her? You could be raising Misumena babies!

and a mite?

[triops]

for your puzzle picture, look for Praon, an aphid parasite.

[Hedera]

Thank you, both. No, I left the "balloon" where she was- evidently ready to pop. The other item didn't move at all so I wondered about parasite; there were lots of aphids on the plants nearby. It fits.