NymphArticulated Hellgrammite

A lifelike and highly effective nymph pattern, the Articulated Hellgrammite imitates the larval stage of the Dobsonfly. Its articulated design and realistic features make it a deadly choice for targeting trout and smallmouth bass.

Season
Spring, Summer, Fall
Difficulty
Advanced
Target Species
Trout, Smallmouth Bass
Articulated Hellgrammite - Image source: SD Fly Angler
Image source: SD Fly Angler

Overview

This complex pattern mimics the bulky, segmented body and movement of a real hellgrammite by using an articulated two-part design. The rear hook is palmered with soft hen or schlappen hackle for motion, while the front shank features lead wraps, rubber legs, and buggy dubbing or chenille for mass. A trimmed chenille or dubbed thorax creates the head shape, often finished with heavy dumbbell eyes or a conehead to help it sink. It's a challenging but rewarding tie—best built using a dubbing loop and articulated shank to achieve maximum realism.

Pattern Characteristics

Advanced Difficulty
Trout, Smallmouth Bass
Stillwater
Moving Water
Spring
Summer
Fall
Imitates: Dobsonfly Larvae

Materials

Hook: Tiemco 3769, size #8–#12
Thread: Black Veevus 6/0
Body: Black rabbit fur dubbing
Ribbing: Fine copper wire
Shell: Solarez Bone Dry UV resin
Legs: Black rubber legs
Tail: Black marabou

Fishing Tips

Season

This pattern is most effective in the Spring, Summer, and Fall when Dobsonfly larvae are most active.

Presentation

The Articulated Hellgrammite can be effectively fished using a dead drift or a slow retrieve.

When to Use

Use this pattern when fishing in waters known to have Dobsonfly larvae, especially during their active months.

Water Type

This pattern is effective in both stillwaters and moving waters, making it a versatile choice for different fishing scenarios.

Rigging Suggestions

Try rigging this pattern on a sinking line and use a slow retrieve to imitate the natural movement of the Dobsonfly larvae.

Visibility & Floatation

This pattern is designed to sink and imitate a larvae moving along the bottom. The black color and realistic features make it highly visible to fish in various water conditions.