• WordNet 3.6
    • n Corydalus type genus of the Corydalidae
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Century Dictionary and Cyclopedia
    • n corydalus A genus of planipennine neuropterous insects, of the family Sialidæ. Its technical characters are: 3 ocelli, placed in the front, above the antennæ; mandibles very large, protruding far beyond the head in the male; antennæ moniliform; and the fourth tarsal joint small and entire. C. cornutus is the common North American species, whose larva is popularly known as the hellgrammite. The larvæ are aquatic, and ordinarily live under stones in swift-running streams. It possesses both branchiæ and spiracles, and is much used for bait by anglers, who call it dobson and crawler. Also Corydalis.
    • n corydalus [lowercase] An insect of this genus: as, the horned corydalus.
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In literature:

In its adult form, it is known as the horned corydalus.
"The Insect Folk" by Margaret Warner Morley
Corydalus, mandibles of, 182.
"Our Common Insects" by Alpheus Spring Packard