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caddis fly

any small mothlike insect of the order Trichoptera, having two pairs of hairy wings and aquatic larvae (caddis worms)
Word Origin
C17: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for caddis fly
Historical Examples
  • These new treasures proved to be the larvae of the caddis fly in their stone houses.

  • Did you ever see the newt roll her eggs in small leaves, or the caddis fly make a case of bits of stick, leaves, and sand?

    Boy Scouts Handbook Boy Scouts of America
  • When the caddis fly felt like laying eggs, she crawled down the stalk of one of the pond plants and laid them there.

    Among the Pond People Clara Dillingham Pierson
  • Like the red-throat it is also susceptible to bait, which in Montana is the "rock-worm," the larva of the caddis fly.

    Favorite Fish and Fishing James Alexander Henshall

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