A Zug Bug all grown up; another one from Terry Hellekson's Fish Flies.
hook - Mustad 3906B #12
thread - Danville 6/0 black
rib - x-small wire gold
tail - peacock sword
body - peacock herl
hackle - hen brown
wing - teal flank
Part 1
mash barb, start thread; tie in rib, wrap to bend
measure (gap width past bend) some peacock sword fibers; tie in/trim
tie in some peacock herl; twist around thread, wrap to 1 eye width back from eye, tie off/trim
counterwrap rib; helicopter end, cover with thread