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CDC Biot Para Emerger
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Fly recipe:

Hook: Scud or Emerger Hook (Dai Riki #135 #125) Size # 16-20
Thread: Olive 8/0 Uni Thread
Tail: Olive Z-Lon or Antron
Body: BWO Turkey Biot
Wing: Grey Dun CDC
Post: White Poly Yarn or Caps Float Vis
Hackle: Medium Dun Dry Fly Hackle
Head: BWO Superfine Dubbing

Tying instructions:

Step 1: Secure your hook in the vise and attach the thread to the hook.

Step 2: Tie in several strands of the antron onto the tail of the hook. Wrap the thread evenly over the antron to secure the strands.

Step 3: Once the tail is secure move your thread forward to the front quarter of the hook shank. Cut a small piece of the poly yarn and tie it on using a fiqure eight style wrap to secure the poly yarn to the top of the hook. Once the poly yarn is secure to the hook twist it around so that it lays on the bottom side of the hook shank. Once the Poly yarn is on the bottom end of the hook shank pull both ends up and around the hook shank. Form a small ramp of thread in front of and behing the poly yarn so that it stands straight up in the air. Now wrap your thread off the hook shank and around the poly yarn to form a post to wrap the hackle around the parachute. This is a standard way of making a parachute post, if you have questions refer to The Fly Tier's Benchside Reference, the definitive manual for fly tying instructions.

Step 4: Now that you have a post for wrapping the hackle bring your thread back to the rear of the hook. Pull off one of the biots, size it to the hook you are using, the further down the feather the larger the biot. Now tie this in tip first. Depending upon your preference for a smooth or segmented body you can tie the biot in up or down. Once the biot is tied in wrap it forward all the way to the post. Secure it on the front side of the post.

Step 5: Now that the parachute and biot are attached, its time to tie in the CDC plume. Select a plume, size it so that the wing extends to almost the rear of the fly, this will aid in the flotation of the fly. Tie it in, secure it with minimal amounts of thread, don't be building too large of an area around the post.

Step 6: Once the CDC is tied in, it's time for the hackle. The next step is to take a either a hackle from a dry fly neck or a good dry fly saddle and remove several of the fibers at the base of the hackle stem. I like to strip the barbs off to expose about 3/4 to l inch of the bare hackle stem. Tie in the hackle just in front of your parachute post and just behind the post. This will insure that the hackle does not pull out when you go to wrap it around the parachute post.

***Due to the size of this fly, use caution not to use too much thread or dubbing***

Step 9: Once the hackle is in place attach a small amount of dubbing to the thread and cover the rest of the exposed hook with dubbing. You will want to try and make a nice small head up to the eye of the hook. This will help to keep the hackle barbs from pointing downward when you wrap the hackle. Your thread should be right near the hook eye, where you want to put on a nice thread head.

Step 10: With the thread near the eye of the hook grab your hackle and begin to wrap it towards the top of your parachute post, where you wrapped the thread up the post. I like to have the hackle all the way to the top of the post before the first barbs start to poke out. Once you are at the top make one wrap below the next until you have a nice full hackle around the parachute post. Once the post is hackled bring the hackle in front of the eye of the hook and wrap over it with thread. Pull all the hackle fibers out of the way and make a small head on the fly.

Step 11: Whip Finish and apply a drop of head cement to the fly. Trim off the thread and if you prefer add some WaterShed or another floatant product to aid in the floatation. I personally use a little bit of Angling Evolutions Float Spray. Now you have a deadly baetis emerger and you are ready to fool even the pickiest of our trout friends.

Notes:

Blue Winged Olive's or Baetis are a staple item of the diets of trout in our area, hatching at two times of the year in the fall and spring. Although many patterns exist to imitate the various stages of development of this bug, trout can be very selective during hatches, keying in on emerger's when spinners and duns are plentiful. This emerger has produced fish for me from the Yellowstone to the Madison to the East Gallatin and Milesnick's Spring Creek.

An interesting twist to this bug is to change the white antron to orange, pink, or green making a Hi-Vis version.