Vi fant 2 definisjoner av alderfly på engelsk.
Noun |
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| alderfly - dark-colored insect having predaceous aquatic larvae | ||
| alder fly, Sialis lutaria | ||
| neuropteran, neuropteron, neuropterous insect insect having biting mouthparts and four large membranous wings with netlike veins | ||
Substantiv |
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| alderfly - A member of any one of the sixty-six species of the family of megalopteran insects, each specimen of which has a body length not exceeding one inch and possesses long filamentous antennae and four large dark wings. |