On cutting off both the poisers of a crane-fly, he says it was unable either to fly or walk.
Then there is the crane-fly, whose balancers you can see quite easily.
crane-fly larvae are frequently seriously destructive locally in grass and wheat fields.
He next, therefore, cut off the poisers of a crane-fly (Tipula crocata), and found that it buzzed when it moved the wing.
crane-fly (Tipula oleracea), a, female; b, larva ('leather-jacket' grub).