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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 ?
Desert suckers and hellgrammites had relatively narrow diets (B = 0.
These results indicate a high degree of dietary overlap of hellgrammites with two species of native fish, with moderate overlap among other taxa.
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).
Numbers indicate the frequency of each prey item in the foregut of each size category of hellgrammites.
While many of the small-bodied minnow and sunfish species support the food web here, insects are also an important component, including giant hellgrammites often preferred by large panfish and smallmouths," Richards said.