Which insect paralyzes spiders to feed its young?

The mud dauber wasp is known for its unique behavior of paralyzing spiders, which it then uses as a living food source for its larvae. When a female mud dauber wasp hunts, she captures a spider, subdues it with her sting, and places it in a pre-prepared nest. After ensuring the spider is immobilized but still alive, she lays her eggs on the spider and seals the nest. Once the eggs hatch, the young wasp larvae feed on the still-living spider, which provides them with nourishment as they grow. This strategy is an effective means of ensuring that the larvae have a fresh food supply until they are ready to emerge as adults.

Other insects, such as paper wasps, yellow jackets, and hornets, have different behaviors and diets. While they may also feed on other insects or contain some predatory behaviors, they do not specifically target spiders in the same manner that mud dauber wasps do.