Falling back, part three

The encounter that I observed between the black-and-yellow argiope and the wasp ended peacefully.  However, when I went to check on the spider a few days later, there was evidence that it had gone through a more violent confrontation in the interim.  Can you find what is missing in the picture below?

What is missing?

Either another predator targeted the spider or one of the spider's prey put up a fierce fight -- because the spider was down to seven legs.

Explore some more: Spiders Evolved Spare Legs