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The large brownish aquatic larva of the dobsonfly, often used as fishing bait. Also called dobson.

[Probably hell (from its painful bite ) + -grammite, of unknown meaning and origin.]


(ˈhɛlɡrəˌmaɪt) or


(Animals) US the larva of the dobsonfly, about 10 cm long with biting mouthparts: used as bait for bass. Also called: dobson
[C19: of unknown origin]


(ˈhɛl grəˌmaɪt)

the aquatic larva of a dobsonfly, used as bait in fishing.
[1865–70, Amer.; orig. uncertain]
References in periodicals archive ?
Females lay eggs on branches, sticks or plants that hang over the water, and when the eggs hatch, the larvae drop into the water to begin life as a hellgrammite.
We collected nymphs of stoneflies (Perlodidae) and larval hellgrammite (Corydalidae) from four sites in the Gila River, New Mexico, in February and June during 2008-2010.
Dobsonfly - The adult form of the aquatic hellgrammite.
Food habits of hellgrammite larvae, Corydalus cornutus (Megaloptera: Corydalidae), in the Brazos River, Texas.
Almost two-thirds of the hellgrammites (Corydalus cornutus) from a Tennessee stream carried chironomids (Furnish et al.
The macroinvertebrate community in the mainstream of the Pigeon River commonly includes stoneflies (Taeniopterigidae), mayflies (Leptophlebiidae, Heptageniidae), caddisflies (Limnephilidae, Hydropsychidae, Phryganeidae, Polycentropodidae, Phil-opotamidae), amphipods (Gammaridae), isopods (Asellidae), black flies (Simuliidae), midges (Chironomidae), other Diptera (Athericidae, Culici-dae, Tabanidae, Tipulidae), true bugs (Belostomatidae, Corixidae, Gerridae, Nepidae, Notonectidae, Veliidae), water beetles (Dytiscidae, Gyrinidae, Haliplidae, Hydrophilidae), dragon flies (Anisoptera), damsel flies (Coena-grionidae)T hellgrammites (Corydalidae), alderflies (Sialidae), and crayfish (Decapoda).