Sulphur CDC Emerger
This is a go-to emerger pattern for many sulphur species. We make a few tweaks to improve on a simple design. Most notable is the Darlon shuck, it sinks fast and becomes more fluid under the water compared to the antron or Zlon. The high wing keeps the fly floating but visible while keeping the body mostly under the surface.
Tied on barbless hooks!
| Feature | Detail |
|---|---|
| Hook Type | Barbless |
| Design | Improved Sulphur Emerger with Darlon shuck and high wing |
| Float Behavior | High wing keeps fly floating and visible; body remains mostly submerged |
FAQ
What makes the Darlon shuck different from other shuck types?
The Darlon shuck sinks faster and becomes more fluid in the water compared to antron or Zlon shucks, offering better underwater movement and natural action.
Does this fly work well in different water conditions?
Yes, the high wing helps maintain visibility on the surface while the body stays submerged, making it effective in both still and moving water.
Is the hook barbless and safe for fish?
Yes, the fly is tied on barbless hooks, which reduces injury to fish and makes it easier to remove without damaging the hook.


Virginia Hodges –
This emerger performs well in both clear and cloudy waters. The Darlon shuck gives it a natural sinking action that mimics real insects. I’ve used it successfully with trout and grayling. The barbless hook makes it easy to retrieve and clean.
Robert Scott –
Great design for sulphur species. The high wing keeps it visible without floating too high. It’s a bit more expensive than basic emergers, but the performance justifies the cost.
Phil Underwood –
I tied this pattern for a morning stream trip and caught several fish. The fluid movement under water is realistic and the fly stays in place well. Highly recommend for emergers.