Plural of dobsonfly; large aquatic insects with long mandibles, found near streams and rivers.
Named after an obscure character or possibly after the Dobson family in entomology. The term combines an origin name with 'fly,' the insect category.
Dobsonflies are aquatic horror-movie material — the larva (called a hellgrammite) looks like a prehistoric monster with pincers and gills, yet fishermen use them as bait because trout love them.
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