Some species of flies and mosquitoes are also pollinators. One cute example of pollinating flies are the Bombyliidae. Mosquito larvae are also important food sources for aquatic and semi-aquatic species like frogs and fish.

Haha there’s a reason why the Xenomorph from Alien is in part inspired by parasitoid wasps.

If you wanna learn about some more wasp pollination, look up fig wasps (Agaonidae). Wasps are legitimately one of the coolest groups of animals.