Pitcher plant. Had one of them, too. My hatred of flies knows no bounds.
I've never seen a place with as many flies as Detroit.
I've never seen a place with as many mosquitoes as Korea.
This place, where I am now, has a lot of spiders. We had one get in the house, a little over a week ago, that was nearly the size of my hand--and it wasn't a skinny, Daddylongleg spider! It was fat! My wife freaked out! Now, I know why our cable guy didn't want to go under our house.
When I went under there, during the winter, while I was running new power lines for our fireplace lights, there were a lot of huge dead spiders down there. This is probably the same reason why we have little snakes and frogs living next to our house.