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see dobsonflydobsonfly,
common name for a group of insects of the order Megaloptera, found throughout E North America. The adults may be 5 in. (12.7 cm) long; the male has mandibles half as long as the body. They are soft-bodied insects with a fluttery flight, and are largely nocturnal.
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References in periodicals archive ?
One of the best baits for catching bass and trout, hellgrammites will bite if given the chance.
In total, we analyzed guts of 29 hellgrammites and 57 stoneflies, with guts of 25 hellgrammites and 31 stoneflies containing measurable contents.
Dobsonfly larva - Hellgrammites grow up to three inches long, reflecting three years of growth in the aquatic stage.
Two of the most common groups of predators in the benthic food web of the SLR are creeping water bugs (Hemiptera: Naucoridae) and hellgrammites (Megaloptera: Corydalidae).
Incidence of chironomid phoretics on hellgrammites in streams of southern Maine.
and a night river made of hellgrammites and brown trout