Predatorial Trees
Mason Dixon writes: "The white pine tree -- known for its majestic heights and soft blue-green needles -- is a predator under the soil, teaming up with fungi to eat insects alive. University of Guelph researchers found that white pine trees form a deadly partnership underground with the fungus Laccaria bicolor, which grows from the tree's root. The two work as mutualists, with the fungus preying on insects to get animal-origin nitrogen, then using it to "barter" with the host tree for the carbon it needs to synthesize enzymes."
I prefer the fungi that catch nematodes in loops and then suck them dry. They've got pictures here.