Trichoptera

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Tri·chop·ter·a

(tri-kop'tĕr-ă),
An order of insects in which the aquatic larvae (caddis flies) construct a protective case (caddis) of bits of submerged material in a highly specific form; commonly found attached under stones in freshwater streams. The adult caddis flies, having hairy wings, shed their hairs and epithelia, causing hay fever-like (allergic) symptoms in sensitive people.
[tricho- + G. pteron, wing]
Farlex Partner Medical Dictionary © Farlex 2012

Trichoptera

the insect order containing the caddis flies. The larvae are aquatic and often live in a case or tube which they carry around; they include herbivores and carnivores and some species act as indicators of pollution. The adults have reduced mouthparts and feed only rarely.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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cascadae at Mack Creek consumed philopotamid caddis flies and ostracods at levels well above their abundance, and heptageniid mayflies and perlid stoneflies well below their abundance (Table 3).
Caddis flies are found in many different freshwater environments.
This photograph from Man Eating Bugs by Peter Menzel and Faith D'Aluisio (Ten Speed Press, 1998) shows zaza-mushi, larvae of aquatic caddis flies, retrieved from Japan's Tenryu River.
Brigham clocked the foraging times of both nighthawks and bats and found that the birds hunted an average of 70 minutes nightly, making 18 attacks a minute on caddis flies and flying ants.
For example, his research on caddis flies, caddis fly patterns and techniques have given New York anglers more destinations and options than just crowding Catskill streams and fishing with dry flies that imitate mayflies.
Hatches of caddis flies will provide good action through September.
Suddenly it will launch itself into the river, using its wings to "fly" underwater, where it feeds on caddis flies and other aquatic insects.