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  1. Dobsonfly - Wikipedia

    The larvae (commonly called hellgrammites) are aquatic, living in streams, and the adults are often found along streams as well. The nine genera of dobsonflies are distributed in the Americas, Asia, …

  2. Hellgrammites - New River Gorge National Park & Preserve (U.S.

    Jan 27, 2021 · The hellgrammite is the larval stage of this insect and it lives an aquatic life. Hatching from an egg case placed on a rock ledge or branch that overhangs the river, young hellgrammites fall …

  3. The Fascinating World of Hellgrammites and Dobsonflies – by Dr. Jon ...

    Jun 20, 2023 · Wherever they are encountered, the sight of an adult dobsonfly can be as impressive and fear-inducing as a hellgrammite, since they retain their large size and now possess translucent, …

  4. What Are Hellgrammites and Why Are They Even Creepier When They …

    Dec 13, 2023 · Hellgrammites are macroinvertebrates and the larva of dobsonflies. They start as eggs near the water shortly after the female has mated. Female dobsonflies will not lay eggs in polluted or …

  5. Dobsonfly Larvae Exposed: Understanding Their ... - What's That Bug?

    Apr 4, 2024 · Hellgrammites are aquatic insects commonly found in rivers, streams, and creaks. They prefer shallow and fast-flowing waters and often hide under rocks and logs. In this regard, you should …

  6. Hellgrammite - Missouri Department of Conservation

    Hellgrammites are the larvae of eastern dobsonflies. They are aquatic, somewhat flattened, and usually some shade of dark brown, tan, or black. Some people think they look like centipedes. The head is …

  7. What insect is this? : Garden : University of Minnesota Extension

    Significance: Not aggressive but may bite if handled carelessly; is otherwise harmless. More information on Hellgrammite. Did this tool help you identify the insect? Tell us.

  8. EENY 414/IN987: Eastern Dobsonfly (Adult), Hellgrammite (Larva

    The eastern dobsonfly, Corydalus cornutus (Linnaeus), is one of our largest non-lepidopteran insects. Its larvae, known as hellgrammites, are the top invertebrate predators in rocky streams where they …

  9. What the heck is a hellgrammite? - The River Reporter

    Jun 5, 2024 · What the heck is a hellgrammite? Formerly a hellgrammite, this male dobsonfly has emerged as a winged adult. You never know who—or what—you might meet while adventuring …

  10. Hellgrammites

    Hellgrammites are the vicious larvae of the Dobsonflies, some of the only trout stream insects which pose a biting threat to the angler. The pincers of the adult are even more frightening that the larva's, …