It's amazing how quickly things change when Mother Nature decides it's time to change. Just a few weeks ago we were still throwing hoppers and PMDs. All of a sudden, over a couple of weeks, things changed and the food source went to BWOs and away from hoppers. So far this Fall, I have been caught off guard with BWO hatches that I didn't have flies small enough. They were eating a size 24, maybe a size 26 BWO. Luckly, I have a few flies that small, but not exactly BWO looking.
The pattern listed below is an emerger. I like fishing emergers before the hatch and even right through it. Many fish will eat the emerger rather than the dun if presented right in front of their face. This pattern works well when you need a little flash to get the fish's attention. It's a true guide fly, as it's easy to tie up a bunch.
Hook: TMC 200R or similar. #18-24. (#24=Dia-Riki 270)
Thread: Any small thread. Olive Dun 8/0 used here
Shuck: Amber Z-lon
Dubbing: Any dry Fly Dubbing. Trout Hunter Proffesional Dubbing used here. Olive Brown.
Wing: Glamour Madera, Pearl. Single strand.
Colors: Olive, Gray & Brown
|Tie in the shuck|
|Trip the shuck to length. Dub small ball in front of the wing|
|Tie in a strand of Glamour Madera|
|Dub another very small bit of dubbing to cover the wraps|
|Trim thread and whip finish|
|Trim wing rather short|
|Finished emerger. Go fish it!|