Found this over on a Norwegian site; similar to other Humpy/Compara-ish emerger versions, this one has a deer hair tail. Tied here as a PMD; change color/size to suit your needs.
hook - Dai Riki 305 #14 (same shank length as a standard #16 but this hook provides a wider gap)
thread - Uni 8/0 Lt. Cahill
tail - deer hair bleached
rib - x-small wire copper
abdomen - pheasant tail bleached
wingcase/wing - deer hair bleached
thorax - dubbing pale yellow
Part 1
mash barb, start thread; tie in rib, wrap to bend
clean, stack, measure (shank length) a sparse clump of deer hair; tie in/trim butts
tie in a few pt fibers; wrap to 2/3 mark, tie off/trim
counterwrap rib; helicopter end, cover with thread
clean, stack, measure (shank length) another clump of deer hair; tie in one eye width back from the eye with tips facing forward