David Hancocks, Master Builders of the Animal World, Londres, Hugh Evelyn, 1973, p. 118.
Almost all caddis fly larvae live underwater but one species, which is found only in Worcestershire, is completely terrestrial and lives round the base of large trees. The caddis fly exhibit a great variety of construction techniques. Some build their tubes with sticks, others of stones, sand grains, shell fragments of whatever material is available. One Victorian naturalist, a Miss Smee, even managed to get them to build with gold dust. They also build cases of compacted sans grains around themselves. These cases are bound around the larvae with sticky secretions or strands of silk and some species also construct silken nets for catching their food.