Pronunciation: (kad'is-flī"), [key]
any of numerous aquatic insects constituting the order Trichoptera, having two pairs of membranous, often hairy wings and superficially resembling moths. Also,caddicefly.Cf. caddisworm. See illus. in next column.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.