Invicta Flies - Bubble Smut
This tiny fly is discussed in Darrel Martin's "Micropatterns." It represents the emerging Simulid, or black fly, which rises from the bottom enclosed in a bubble of gas. The black dubbing suggests the emerging adult, and this color can be changed to imitate other species which emerge in the same manner. When fished, the CDC fibers fold back over the body to form the gas bubble, and the optional bubble trail helps to get the fly noticed. See "Micropatterns" for more information.
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 Submerged Bubble Smut
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Hook: Mustad 94840, #26
Thread: white, 8/0 or finer
Tail (optional): one strand silver Flashabou Accent or Krystal Flash
Abdomen: fine silver wire
Thorax: ball of fine black dubbing, followed by fine silver wire
Hackle: white CDC barbs
Tying Instructions:
1.) Place hook in vise and secure thread, ending just into bend.
2.) Tie in one strand of silver Flashabou or Krystal Flash, extending two inches beyond bend.
3.) Tie in silver wire and bring thread forward to tip of hook point. Wind wire forward to thread and tie down, but do not clip. Instead, wind thread over wire and hook shank forward. Leave silver for now.
4.) Form a small ball of dubbing just in front of hook point.
5.) Wrap silver wire in two layers in front of dubbing. Be sure to leave room for the CDC hackle. Tie off and clip excess.
6.) Tie in white CDC feather just behind eye. Length of the fibers should be equal to the length of the entire hook. Take one full turn of hackle, tie off, clip excess.
7.) Whip finish, cement thread wraps.
Shrouded with bubble trail.