Ecological Role - Although caddisfly larvae are often important scavengers, most adult caddisflies do not feed; however, they are an important food source for birds and fish, such as trout, rock bass, smallmouth bass, and darters. Other vertebrates (animals with a backbone) and invertebrates (animals with no backbone) also eat the adult caddisfly. Caddisflies Our collection of caddis fly flies offers tried and true classic fly patterns, including the Elk Wing Caddis dry fly, which beautifully imitates the prolific natural caddis fly. It floats .
Caddisfly Adult | Office for Environmental Programs. Description: Adult caddisflies resemble small moths with wings held tent-like over their back when at rest. They have long hair-like antennae. Most species are small (usually 1/4 .