Ferdinand C. Lane, All about the insect world, Ill. Matthew Kalmenoff, New York, Random House, 1954, p. 43.

She, too, spends her larval life in the water, but we would never recognize her here. For she looks like a fat and many-legged worm. No that she has many legs, for we know an insect has only six. But tufts of hairs along her sides give her that appearance. Unlike most insects she builds a snug home for herself. Picking up grains of sand or bits of straw or even tiny pebbles, she glues them together in a case that may be two inches long. Inside she hides safe from the bites of hungry fish or greedy larvae.