Funny name isn't it? It is a fonetic way of writing the polish name given to a small crayfish.

Well probably crayfish on hooks sized 16 do not exist, but there is aparently a dun living in the San river that before emerging looks similar.

Proven by competitors these micro nymphs fished on a thin leader upstream do a great job on our home river.
Mind you - these are woven flies, so again, hard and time consuming to tie.