Hellgrammite Fly


An imitation of the Dobsonfly larva, also known as the Hellgrammite.

How it's tied

The Hellgrammite fly is tied on a long shank hook, typically in sizes 4 to 8. The body starts with a lead wire underbody to give the necessary weight and segmented look. Black or dark brown chenille or dubbing is used to form the body, creating the dark and segmented appearance of the Hellgrammite larva. Legs are added using black or brown rubber leg material to mimic the many legs of the natural larva.

What it mimics

As the name suggests, the Hellgrammite fly pattern is designed to replicate the Dobsonfly larva, commonly known as the Hellgrammite. These larvae are known for their large size and segmented bodies and are a popular meal for many species of fish due to their high nutritional content.

Where it's used

The Hellgrammite fly pattern is primarily used in rivers and streams where Hellgrammites are naturally found. This includes fast-flowing waters and rocky areas where these larvae usually live.

The fly is often fished near the bottom, imitating the natural behavior of the Hellgrammite, which is known to crawl along the riverbed.

Fly tying video for the Hellgrammite

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Fish you can can fly fish for with the Hellgrammite

Brook trout

Brown Trout

Cutthroat Trout

Golden Trout


Largemouth Bass

Marble Trout


Smallmouth Bass

Alderflies, Dobsonflies, and Fishflies (Latin: Megaloptera)

The Hellgrammite mimics one or more species from the insect order Alderflies, Dobsonflies, and Fishflies

Latin: Megaloptera

Megaloptera consists of alderflies, dobsonflies, and fishflies, large insects with aquatic larvae and terrestrial adults.

Read more about Alderflies, Dobsonflies, and Fishflies

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