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I saw a butterfly get stuck to a web once. It immediately started hurling itself violently away, trying to shake itself free. The spider was not immediately in evidence.

I managed to take the web off it, but not without tearing off the part of the wing that made contact. I assume that in the butterfly's best-case scenario, that would have happened anyway. It was able to fly afterwards.

Now try to save a butterfly from a glue trap.

The spider quickly kills the prey. Glue traps don’t.

They paralyze them and wrap them up till they want to eat them which can be days later.

No.