I ts wings are usually held sloping over the back like a slanting roof. Caddis flies are shy [easily frightened] Creatures and are seldom seen except when they gather around bright lights, to which they are attractet in large numbers. The young of the caddis fly, the caddis worm or larvae are more interesting than the adults. These clever little creatures build long tuves of various materials in which they live in comparative safety.
The different species of caddis worms each use a particular type of material to build their houses, like small sticks and straw, shells, and stones. when the caddis worms is ready to change into pupa, it seals both ends of its home with silk, spends the necessany thime within, and then emerges as a full-grown caddis fly.
