How Small Can You Get?

I just learned about micro wasps. Parasitic wasps find other insect eggs to lay their eggs inside of, because just setting your egg on the buffet line to hatch and pupate and develop is a pretty good idea. But because of this, the wasps are SO FREAKING TINY. Like...holy hell:

Courtesy of the Interwebs

Here is one next to a paramecium and an amoeba TO SCALE! Those are single-celled organisms! 200 microns is one-fifth of a millimeter. Their wings are more feather duster than proper insect wing. Their brains have only 7,400 neurons, and most have lost their nucleotides.

I dunno...this world remains endlessly fascinating.