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NymphDark Lord

The Dark Lord is a unique and versatile fly that is effective for targeting trout in a variety of water types. This pattern is characterized by its dark body and flash of red, which can provoke aggressive strikes from fish. It's a great pattern to have in your box for those tough days on the water when nothing else is working.

Season
Year Round
Difficulty
Advanced
Target Species
Trout
Updated
Apr 2025
Dark Lord fly pattern - imitates Mayflies tied for Trout

Overview

The Dark Lord is a rugged nymph tied with dark dubbing (typically black or brown), red wire ribbing, and a peacock thorax for added flash. A soft hackle collar and heavy bead give it both movement and sink rate, making it ideal for deep runs. It's a gritty, buggy tie that's effective year-round.

Materials

Hook: Tiemco 3761, size #12–#16
Bead: Tungsten Bead, Gold
Thread: UTC 70 denier, Black
Tail: Brown Turkey or Goose Biots
Body: Black Stone SLF Dubbing
Ribbing: Red wire
Wing: Goose Biots, Ginger
Legs: Natural India Hen Back

Behavior & Presentation

Natural Behavior: Dark stonefly nymphs tumble through current after dislodgement from bottom structure, their large bodies creating substantial profiles. The dark coloration stands out against lighter substrate.

Where Trout Eat It: Fish hold near bottom in runs and riffles, intercepting tumbling stonefly nymphs.

How to Fish It: Bounce along bottom with weighted rig, maintaining contact through productive zones. The dark profile attracts attention.

Best Water: Target runs with cobble substrate, riffle edges, and pockets behind structure.

Strike Type: Solid thumps as fish attack the large nymph, or watch the indicator dive sharply.

Fishing Strategy

Rigging Suggestions: The Dark Lord can be used as a single nymph setup or as part of a multiple nymph rig. It can also be used in a tandem rig with a dry fly on top.

Seasonal Timing: The Dark Lord can be used year-round, making it a versatile option to have in your fly box. Use the Dark Lord when other patterns are not producing or when fishing in off-color water.

Pro Tips: This fly sinks and does not float. The dark body and flash of red make it highly visible in a variety of water conditions.

Entomology

Dark-bodied mayfly nymphs inhabit shaded undercut banks and woody debris accumulations, exhibiting nocturnal behavioral drift patterns where they feed most actively during low-light periods. Daytime disturbance or rising water levels push these nymphs into uncharacteristic drift during daylight, making them vulnerable. Fish feeding in pocket water and along structure encounter these nymphs during transitional light periods at dawn and dusk, when behavioral drift peaks and the distinctive dark profile becomes visible against lighter substrate backgrounds.

Order
Ephemeroptera
Common Name
Mayfly
Organism Type
insect
Life Stage
general

Pattern Characteristics

Advanced Difficulty
Trout
Stillwater
Moving Water
Year Round
Imitates: Mayflies
Rocky Mountain
dead-drift
indicator-nymph
baetis-hatch
searching-pattern
high-water