alder fly
- noun
:
mosca de aliso
- The larvae of the alder fly are known to be fierce aquatic predators.
Examples
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Fishermen often use alder fly imitations as bait for trout.
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We found an alder fly resting on a leaf by the riverbank.
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The alder fly is often found near rivers.
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Many alder flies inhabit freshwater streams.
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The larvae of the alder fly are known to be fierce aquatic predators.
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Fishermen often use alder fly imitations as bait for trout.
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The alder fly is often found near rivers.
Synonyms
A dark insect called an alderfly whose young live and hunt in fresh water
A dark insect that lives near water whose young live in water and eat small insects
Surface Forms
Morphology
This is a straightforward noun+noun compound where 'alder' modifies 'fly', so a B1 learner who knows both words will infer it is a type of fly associated with alder trees; although the precise biological details (family Sialidae, aquatic predatory larvae) are not predictable, the basic referent is transparently compositional. Modifier+head animal names are a common, cross-linguistic naming pattern, making the overall meaning accessible from the parts.
Etymology
Alder fly is named for the dark insect you find by rivers: adults sit on alder trees and it is a fly, while the young live in the water. Because those young are fierce water hunters and the adults are common at the river edge, fishermen copy the insect as 'bait', so the name brings to mind the river insect used to catch trout.
