I was cleaning the back deck the other day when this walked by:
Wasps in the family Pompilidae feed their young with captured spiders. This dietary preference turns out to have complications, however, as the wasp’s larvae typically develop over several weeks on a single prey individual. A wasp can’t just kill a spider and pass it off to its offspring, as the carcass would spoil and rot before the larvae had finished.
So the wasp does something seemingly evil.
The venom from the wasp’s sting doesn’t kill the spider, but paralyzes it. The poor arachnid remains alive but immobile while it is slowly consumed. Vital organs last, of course. That maintains freshness for longest.
Canon EF 100mm f/2.8 macro lens on a Canon EOS 50D
ISO 400, f/13, 1/200 sec, diffuse overhead flash