I actually had a bunny in my sump pump hole once. I would never ever have figured it out except one of my Saints was wet on her paws face and chest, and I had not let her out in a few hours. My Saint evidently knew it was there and was either trying to play with it or help it out of the hole. I was just greatful the bunny stayed contained in the hole , or having it loose in the basement with a Saint .... it would not have been pretty..
As for the bug... take a colander and scoop it out.. if you can reach it.