The entrance to a pitcher plant

I was looking around for a picture of a flower to post on one of littlek's threads and I stumbled across this one. The title above the photo was simply "The entrance to a pitcher plant"



Fascinating, isn't it? I can see why a passing fly might be curious and be lured to its death.

But then we have other meat-eating plants such as this one...



What insect in its right mind is going to be attracted to that? I suppose there might be a few flies heading home from a night at licking beer spills off the bar and as they pass by one of them might say, "Dude, let's check out that place!"