This video shows a tiny juvenile Central American harvestmen (Acromares vittatum) very rapidly devouring a chironomid midge.
I shot this video last weekend on my kitchen table using 3 tabletop LCD lamps. Unfortunately I didn't get the colour balance quite right so the video is a bit warm. I'd also like to use a lower ISO to get a higher resolution, but that would mean substantially brighter light, which I don't know it the critters would tolerate. I need to experiment a bit more.