Dragonfly Nymph
Dragonfly nymphs represent some of the largest and most protein-rich prey items available to trout in stillwaters and slower river sections. These fierce aquatic predators can live underwater for 1-3 years before emerging as adults, growing to impressive sizes that make them irresistible targets for trophy trout. A well-tied Dragonfly Nymph pattern is essential for anglers targeting large fish in lakes, ponds, and the slower pools of rivers. The natural dragonfly nymph is a formidable creature with a robust, segmented abdomen, powerful legs, and distinctive large eyes. Different species vary in color from olive and brown to dark green and black, allowing trout anglers to match local populations. The nymphs are active crawlers and swimmers, moving along weed beds, rocky bottoms, and submerged vegetation as they hunt for smaller aquatic insects, small fish, and tadpoles. Dragonfly Nymph patterns are typically tied on larger hooks (sizes 6-10) to match the substantial size of mature nymphs. The fly should be fished slowly near the bottom using a full-sinking or sink-tip line, with occasional short strips to imitate the nymph's swimming motion. Pay particular attention to weed edges, drop-offs, and areas with submerged structure where dragonflies hunt. While dragonfly nymphs are present year-round, they become particularly important during summer months when nymphs migrate toward shore and shallower water in preparation for emergence. This migration triggers aggressive feeding from trout, bass, and panfish. Lakes and reservoirs throughout the western states, including Montana, Wyoming, Idaho, Oregon, Washington, and California, see excellent dragonfly nymph fishing. The pattern also works well in beaver ponds, spring creeks, and slower river pools where dragonflies colonize.
Pattern Details
- Type
- Nymph
- Seasons
- summer
- Hook Sizes
- #6-10
- Hook Type
- 2X-4X long nymph or streamer hook
- Tying Difficulty
- Intermediate
- Imitates
- Dragonfly nymphs
Recipe & Materials
- Hook
- TMC 5263 or similar 4X long, sizes 6-10
- Thread
- 6/0 olive, brown, or black
- Tail
- Olive or brown marabou
- Abdomen
- Dubbed wool or synthetic, segmented
- Rib
- Medium wire or mono
- Wing case
- Turkey tail or thin skin, folded
- Thorax
- Dubbed dubbing, bulky
- Legs
- Hen hackle fibers or rubber legs
- Eyes
- Bead chain or dumbbell eyes (optional)
Technique & Presentation
Begin by securing bead chain or small dumbbell eyes about one-third back from the hook eye if adding weighted eyes. Tie in a substantial clump of marabou at the bend for the tail, keeping it about half the shank length. The marabou provides movement and bulk. Secure the ribbing material at the bend along with the tail.
Create a segmented abdomen by dubbing generously from the bend forward to about mid-shank. The dubbing should be fuller than typical nymph patterns to match the dragonfly's robust body. Wind the ribbing forward in evenly-spaced spirals to create pronounced segments, then tie off and trim. Prepare a section of turkey tail or thin skin for the wing case, tie it in at mid-shank with the dull side facing up, and fold it forward out of the way.
Dub a substantial thorax area, making it noticeably bulkier than the abdomen. Pull the wing case material forward over the thorax, secure it behind the eyes (if using) or near the head, and tie off firmly. The wing case can be folded back over itself for added durability and realism. Add 2-3 hen hackle fibers or rubber leg segments on each side of the thorax to represent the nymph's powerful legs. Build a neat head, whip finish, and apply head cement or UV resin to the wing case for durability and shine. Fish this pattern with a slow, crawling retrieve along the bottom.
History & Origin
Dragonfly nymph patterns have been part of the fly fishing arsenal since the early days of stillwater fly fishing, though they received less attention than mayfly and caddis imitations in early fly fishing literature. British stillwater anglers were among the first to recognize the importance of dragonfly nymphs, developing patterns in the early 20th century for their chalkstream reservoirs.
American fly anglers began paying serious attention to dragonfly nymph patterns in the mid-20th century as stillwater fishing gained popularity in the western states. Pioneers like Dave Whitlock, Randall Kaufmann, and Gary LaFontaine developed influential dragonfly nymph patterns that incorporated new materials like marabou, chenille, and rubber legs to create more realistic and effective imitations.
Modern dragonfly nymph patterns have evolved to include articulated bodies, realistic eyes, and high-tech materials like UV resin and barred rubber legs. However, the fundamental approach remains the same: create a large, robust profile with prominent eyes, segmented abdomen, and lifelike movement. These patterns continue to produce exceptional results for trophy trout in stillwaters across North America.
Where to Fish This Fly
Related Nymph Patterns
Pheasant Tail Nymph
Frank Sawyer's classic nymph pattern imitates a wide range of mayfly nymphs. The pheasant tail fibers create a realistic segmented body. Effective year-round in sizes #14-20, this pattern belongs in every Montana fly box. The Pheasant Tail Nymph is the most important subsurface fly in the history of fly fishing. Frank Sawyer's original design used nothing but pheasant tail fibers and copper wire, with no thread, no dubbing, no synthetics. The result was a slim, naturally segmented nymph that sinks quickly and perfectly imitates the profile of a swimming or drifting mayfly nymph. Modern variations have added a bead head for extra weight and flash, making an already deadly pattern even more effective. In Montana, the bead head Pheasant Tail is a year-round producer on every river in the state. It matches Baetis nymphs in fall and spring, PMD nymphs in summer, and various mayfly species throughout the seasons. Whether fished as a trailing nymph behind a dry fly, in a two-nymph Euro-style rig, or under an indicator, the Pheasant Tail consistently catches fish. Its slim profile sinks quickly and looks natural even to the most selective trout on the Missouri and Bighorn tailwaters.
Zebra Midge
A devastatingly simple midge pupa pattern. Thread body with a bead head, and that's it. The Zebra Midge is the most effective winter pattern on Montana tailwaters and produces year-round on the Missouri and Bighorn rivers. The genius of the Zebra Midge lies in its simplicity. A small bead head, a thread body wrapped in even turns to create segmentation, and perhaps a few fibers for a collar, and that is all there is to it. Yet this pattern imitates the midge pupae that comprise an enormous percentage of a trout's diet on tailwater rivers. Midges hatch every day of the year on rivers like the Missouri and Bighorn, and the Zebra Midge matches them with astonishing effectiveness. The pattern's versatility is remarkable. Fished under an indicator in the classic dead-drift presentation, it produces fish consistently. But the Zebra Midge is also deadly when fished in the surface film as a midge cluster or suspended just below the surface on a greased leader. On winter days when other patterns fail, a small Zebra Midge in #18-22 fished deep and slow can save what might otherwise be a fishless outing. It is the great equalizer, the fly that always works when nothing else does.
Prince Nymph
A classic attractor nymph with peacock herl body and white biots. The Prince Nymph doesn't imitate any specific insect but suggests many. It's a reliable searching pattern when drifted through riffles and runs on all Montana rivers. The Prince Nymph occupies a unique space in fly fishing; it is perhaps the most effective attractor nymph ever designed. The combination of a peacock herl body, white goose biot wing, and brown hackle creates a fly that doesn't precisely match any natural insect but somehow suggests dozens of them. Trout see the Prince Nymph and recognize it as food, plain and simple. The iridescent sheen of the peacock herl, the contrasting white wings, and the buggy profile all contribute to its universal appeal. In Montana, the Prince Nymph is a workhorse pattern that produces fish from the first runoff of spring through the cold days of late fall. It excels as a dropper behind large dry flies, as a searching nymph under an indicator, and as a point fly in a two-nymph rig. On the Madison, Gallatin, and Yellowstone rivers, the Prince Nymph consistently produces when conditions are changing, hatches are unclear, or fish seem unwilling to commit to specific imitations. It is the problem-solving nymph that every angler should carry.
Pat's Rubber Legs
A large, heavily weighted stonefly nymph pattern. Pat's Rubber Legs is the go-to point fly for nymph rigs on the Madison, Yellowstone, and Gallatin rivers. The rubber legs pulse with every micro-current, driving trout wild. Pat's Rubber Legs is the definition of a workhorse nymph. This large, heavily weighted stonefly imitation serves as both an effective fish catcher and the anchor fly in a multi-nymph rig. Its weight gets the entire rig down to the bottom quickly, while its rubber legs provide continuous movement that attracts trout from a distance. The variegated chenille body suggests the mottled coloring of natural stonefly nymphs, and the overall profile matches the large Pteronarcys and Hesperoperla nymphs that inhabit Montana's freestone rivers. On the Madison, Yellowstone, and Gallatin rivers, all premier stonefly streams, Pat's Rubber Legs is arguably the most important fly in a guide's box. It produces fish 12 months of the year, not just during the stonefly emergence. Stonefly nymphs are always present in the drift, dislodged by current, wading anglers, and their own movements. A large Pat's Rubber Legs drifted along the bottom is a convincing imitation that trout eat with confidence. Pair it with a smaller trailing nymph like a Pheasant Tail or Lightning Bug for a devastating two-fly rig.
San Juan Worm
Love it or hate it, the San Juan Worm catches fish. This simple chenille or micro-tubing pattern imitates aquatic worms that are a significant food source in tailwater rivers. Particularly effective on the Bighorn and Missouri after rain events. The San Juan Worm divides the fly fishing community like no other pattern. Purists dismiss it as barely qualifying as a fly, while pragmatists point to its undeniable effectiveness and the scientific reality that aquatic worms (Oligochaeta) constitute a meaningful portion of trout diets, particularly in tailwater environments. On the Bighorn River, stomach sampling studies have shown that aquatic worms can represent up to 20 percent of a trout's diet during certain times of year. Regardless of where you fall in the debate, the San Juan Worm deserves a place in your fly box if you fish Montana's tailwaters. After rain events, rising water dislodges worms from the substrate and puts them into the drift, creating a feeding opportunity that trout exploit enthusiastically. Even during stable conditions, a San Juan Worm fished deep and slow on the Bighorn or Missouri can produce fish when more traditional patterns are not producing. The pattern is especially effective for large trout that have learned to target high-calorie food items with minimal effort.
Lightning Bug
A flashy variation of the Pheasant Tail that uses tinsel and flash for added attraction. The Lightning Bug excels in slightly off-color water and as a dropper behind large dry flies. A Montana guide favorite. The Lightning Bug takes the Pheasant Tail Nymph concept, a slim, segmented mayfly imitation, and adds a generous dose of flash. The tinsel body and flashback wingcase catch light in ways that natural materials cannot, creating a beacon that attracts trout from greater distances. This makes the Lightning Bug particularly effective in off-color water, during overcast conditions, and in deeper runs where light penetration is limited. Montana guides keep Lightning Bugs in their boxes for those days when standard patterns are producing but not as well as expected. A switch from a standard Pheasant Tail to a Lightning Bug can turn an average day into a great one. The flash element seems to trigger a competitive or aggressive response in trout, prompting strikes from fish that might otherwise let a natural-colored nymph pass. On the Madison, Gallatin, and Yellowstone rivers, the Lightning Bug is a consistent producer from spring through fall.