Eyes (optional) Black paint-pen dots on the bead, coated with UV resin (-)
How to tie it
Push the tungsten bead onto the balance pin, then lay the pin along the top of the shank so the bead sits out past the hook eye by about one eye-length; lash the pin down tight and cut off the excess. This counterweight makes the fly hang perfectly horizontal.
Wrap thread to the bend and tie in a slim olive marabou tail about one shank length.
Tie in the olive Half-Round D-Rib at the bend and wrap it forward in touching turns for a segmented body, stopping behind the bead; tie off.
Dub a small thorax of psychedelic olive nymph dubbing between the body and the bead.
Whip finish behind the bead. Optionally dot black eyes on the pink bead and coat with UV resin.