What spider eats what spider?

Answer 1

The black widow spider usually eats the male spider after they mate, unless they give the female a"gift which is something good to eat wrapped in silk. That is why they are called black widow Spiders

Answer 2

Spiders are known to be cannibalistic, with larger spiders sometimes preying on smaller ones, especially in times of scarcity. Some species, like the redback spider, are known for cannibalism, with females consuming males after mating. However, most spiders have a diverse diet and will eat a variety of insects and other small arthropods, not just other spiders.