Sparkle Dun
1212-10
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The Sparkle Dun is a legendary dry fly pattern designed to imitate mayflies during their critical emerger-to-adult stage. Originally developed by Craig Mathews and John Juracek in the early 1980s for the hatches on the Henry’s Fork, this pattern remains one of the most effective choices when trout are feeding selectively on emerging mayflies such as PMDs, BWOs, or Green Drakes.
What sets the Sparkle Dun apart is its trailing shuck, typically made of Z-lon or Antron, which mimics the nymphal casing as the insect emerges. The upright deer hair wing provides both floatation and a realistic silhouette, making it highly visible and believable to trout. This combination fools even the most discerning fish in clear or pressured waters.
To fish the Sparkle Dun effectively, target slow glides, riffles, and seams where mayflies are emerging. Use a long, fine leader and aim for a drag-free drift. The pattern performs exceptionally well during hatch windows, especially when trout are refusing traditional dun patterns. Match the hatch by selecting the appropriate size and body color for the species present—PMDs, BWOs, and March Browns are among the most popular variations.
