An all petrochemical by-product variation of Brad Downey's poly-winged Sparkle Dun. The 2-tone wing's an attempt at improved visibility; not necessary but my eyes aren't what they used to be (all black works well, too, in dull, flat-light conditions). I tried stacking the black on top of the dun but couldn't get the wing to fan properly in smaller sizes like this, so I tried the cross-ways tie in and got the effect I was looking for; your mileage may vary. Tied here as a BWO; change colors to suit your needs.
hook - Dai Riki 300 #18
thread - MFC 8/0 dark olive
shuck - Zelon olive brown
body - tying thread
wing - Congo Hair dun/black
thorax - Fine & Dry dubbing olive grey
Part 1
mash barb, start thread, tie in shuck, fold and wrap back to bend; trim (shank length)
tie in a hank of black CH along the shank
tie in dun CH on the perpendicular
pull it all up, lock in place with cross wraps at the base
dub thread/dub thorax; half hitch x 2, SHHAN