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    Phil Rowley - Gomphus

     

    Gomphus-A Blend of Function and Form

     

    Hook:    Daiichi 1710, #8-#10

    Thread: 6/0 or 140 Denier, Grey, Olive, or Tan

    Body:    Deer Body Hair, Natural or Dyed Spun and Clipped to Shape

    Legs:     Hen Pheasant, Cock Pheasant or Mallard Flank Fibers

    Head:   Deer Body Hair, Natural or Dyed, Spun and Clipped to Shape

     

    One of the best dragon nymph imitations is Jim Crawford’s Gomphus.  Although technically not a Gomphus imitation, Gomphus or Gomphidae are most commonly found living in slow moving sections of rivers and streams, there is no disputing this pattern’s success. 

     

    The spun and clipped deer hair body of the Gomphus allows for pedestrian retrieves coupled with sinking lines to mimic the plodding nature of the nymph as it crawls along the bottom.  The Gomphus features a tightly spun, packed and clipped deer hair body providing natural buoyancy to keep the fly just above the bottom.  

    Selecting the correct deer hair is critical.  Soft, spongy to the touch, deer hair spins and flares easily.  When using dyed deer hair inspect the hair closely as the dying process can dry out and stiffen the hair making it unsuitable or difficult to spin. 

     

    Deer hair’s natural grey color is a perfect match for most Sprawler nymphs that this pattern was designed to imitate.  I also tie Gomphus patterns in other colors such as olive. You can also color the body and head using permanent markers.  Tie your Gomphus patterns using natural deer hair and color them at the vise or better yet, on the water to match the natural nymphs.

     

    Another option involves blending different colors of deer hair.  My first book, Fly Patterns for Stillwaters featured Dunc’s Carey, a spun and clipped dragon nymph designed by Duncan Laird.  Duncan mixed different colors of deer hair together in the same manner you would blend dubbing.  Blending a variety of different deer hair colors allows you to create a natural mottled body. 

     

    Spinning deer hair can be both challenging and frustrating.  Remember, deer hair is a ‘hands on’ material that always needs to be under control.  In order to properly spin deer hair the short fibres and underfur must be removed after a clump has been trimmed from the hide. Removing the short fibres and underfur is easily accomplished by pinching the hair by the tips and then plucking the underfur and short fibres from the butts.  Fine tooth moustache or pet flea combs also work well.  As the tips aren’t used for the body and head of the Gomphus removing them prior to spinning reduces the trim time and the chance of the hair catching on the hook point as it rolls around the shank. 

    To form the body begin at the rear of the hook by laying a deer hair clump across the shank on roughly a 45-degree angle so there are equal amounts of hair on either side of the hook.  Place two loose controlled wraps of 6/0 or stronger thread around the clump.  Apply thread pressure on the third wrap.  As the hair begins to flare continue increasing thread tension allowing the hair to rotate around the hook.  To secure the hair, continue winding the thread in the same location until it stops spinning.  Support the deer hair from behind, pack the deer hair back into position using your fingers or a hair packer.  Continue spinning and packing clumps of deer hair along the shank to form a tight dense buoyant body.

     

    Once the body is complete trim it to shape.  Begin by trimming the hair flush along the bottom to ensure an unobstructed hook gape.  Trimming can be done in the vise or by tying off the tying thread and removing the hook from the vise.  Next, trim the top of the body flat.  Finally, trim the sides and tip of the body to a rounded shape to match the squat spider-like shape of the natural nymphs.

      

    With the body trimmed to shape tie in the legs.  Common leg materials include natural hen pheasant and ringneck pheasant tail fibers or dyed mallard flank, teal or gadwall.  The legs should flow down the sides, tips even with the end of the body.  With the legs in place form a triangular shaped spun and clipped deer hair head to complete the fly.  Pinching the legs alongside the body and exercising a level of care when trimming the head ensures you don’t accidently amputate the legs.

    A cross section of Gomphus patterns in sizes #8 and #10 is a must for any stillwater fly box.  Especially when dragon nymphs are on the move when they migrate towards shore to crawl out and emerge, when prospecting new waters and during the summer and fall months.

     

    Tying Instructions

     



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