And dragging

Arabella Buckley, Lide and her Children, Glimpses of Animal Life, Londres, Edward Stanford, 1880, p. 221-222.

The same thing is true of the caddis-flies or water-moths (cf. Fig. 75), which anglers use as bait, for they too cannot feed after they get their wings; but their life in the pool below has been rather different. Their tail is soft like that of the hermit-crab, and they need to hide it in some strong covering.
And for this purpose they build themselves tubes of silk, into which they weave pieces of wood and grass, or of sans and stones, and even sometimes shells with living creatures in them ; and dragging these tubes about with them, they put out their strong head and shoulders, and feed on plants and insects.