Midge / EmergersSplit Foam Back BWO
An innovative pattern designed to imitate emerging blue-winged olive mayflies. The split foam back mimics the wings of the mayfly as it struggles to break free from its nymphal shuck.
Spring, Fall
Advanced
Trout
Overview
A low-riding Blue Wing Olive emerger with a foam split back to keep it in the film. The segmented body is often made from thread or fine dubbing, and a sparse tail and CDC or Antron shuck finish it off. It's deadly during Baetis hatches on flat water.
Pattern Characteristics
Materials
Hook: #18-22 Tiemco 2487
Thread: Olive UTC 70
Tail: Mallard Flank
Body: Small Copper Wire
Thorax: Olive UTC 70
Flash: Medium Pearlescent Tinsel
Casing: Tan Thin Foam
Legs: Mallard Flank
Fishing Tips
Season
This pattern is most effective in the Spring and Fall, during Blue-Winged Olive hatches.
Presentation
Fish this pattern in the surface film or just below, where BWO mayflies typically emerge.
When to Use
Use during a BWO hatch or when fish are feeding just below the surface.
Water Type
This pattern is primarily for moving water.
Rigging Suggestions
Use this pattern as a dropper off a dry fly during a hatch.
Visibility & Floatation
This fly is designed to sink slightly below the surface. The foam wings add buoyancy and visibility.
