caddisfly

[kad-is-flahy]
noun, plural caddisflies.
any of numerous aquatic insects constituting the order Trichoptera, having two pairs of membranous, often hairy wings and superficially resembling moths.
Also, caddicefly.
Compare caddisworm.


Origin:
1780–90; see caddisworm, fly2

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The caddisfly are the two small cylindrical objects in the center-left and center-right of the photo.
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