Arthrobotrys fungus

Arthrobotrys is a genus of mitosporic fungi in the family Orbiliaceae. There are 71 species. They are a predatory fungus that captures and feeds on nematode worms. Rings that form on the hyphae constrict and entrap the worms, then hyphae grow into the worm and digest it. Arthrobotrys fungus feeds on nematode worms that it traps in a tightening noose in just 1/10th of a second.