Thread to match body (black, brown, olive, tan) 8/0
Materials
Bead Tungsten bead (gold or copper) (sized to hook)
Tail Coq de Leon (CDL) fibers (small bunch)
Body Goose/turkey biot (color to match) (1)
Hot spot Small pearl/flash accent (few strands)
Collar Hare's mask dubbing (1 pinch)
How to tie it
Slide a tungsten bead to the eye and start thread behind it.
Tie in a sparse tail of stiff Coq de Leon fibers at the bend, about one shank length, splayed slightly for a natural mayfly-nymph tail.
Tie in a biot by its tip and wrap it forward in slightly overlapping turns to create a cleanly segmented abdomen over the back two-thirds of the shank.
Add a small pearl flash 'hot spot' just behind the collar; the tiny bright accent is the trigger that draws wary trout.
Dub a short, buggy hare's-mask collar behind the bead to suggest legs and thorax.
Whip finish behind the bead and pick out a few guard hairs so the collar breathes.