Mount hook, tie in a short brown hackle fiber tail at the bend. About half a shank length.
Tie in 4 inches of fine gold wire for the rib and a brown hackle feather by the tip at the bend.
Tie in 3-4 peacock herls, twist them into a rope, and wrap forward to the 70% mark. Touching turns for a full, iridescent body.
Palmer the brown hackle forward through the body in 4-5 open spiral turns. Counter-wrap the gold wire rib, lashing the hackle stem at each turn for durability.
Tie in a sparse gray squirrel tail wing over the body, tips extending to the tail. Just a thin veil of hair, not a thick clump.
Wrap 2-3 turns of peacock herl at the head for a dark, buggy collar.