• WordNet 3.6
    • n lacewing any of two families of insects with gauzy wings (Chrysopidae and Hemerobiidae); larvae feed on insect pests such as aphids
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Webster's Revised Unabridged Dictionary
    • n Lacewing lās"wĭng` (Zoöl) Any one of several species of neuropterous insects of the genus Chrysopa and allied genera. They have delicate, lacelike wings and brilliant eyes. Their larvæ are useful in destroying aphids. Called also lace-winged fly, and goldeneyed fly.
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Century Dictionary and Cyclopedia
    • n lacewing Same as lace-winged fly.
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In literature:

It helps us get rid of the aphids, and we should never kill a lacewing or a child of the lacewing.
"The Insect Folk" by Margaret Warner Morley
Includes the alder-flies, ant-lions and lacewing-flies.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4" by Various

In news:

Spider mites have lots of natural enemies (like lacewings, minute pirate bugs, big eye bugs, and predaceous mites , thrips and midges) that often limit populations.