Paul Beuk wrote:
1. Possibly Misumena viatica, Thomisidae (crab spiders).
2. Possibly a Xysticus species, also Thomisidae (crab spiders).
3. Ach, yes, a weevil (Coleoptera: Curculionidae), what can I say. Way out of my league.
4. Indeed Hymenoptera, family Chrysididae, cuckoo wasps.