I previously highlighted this little gem, but the previous pattern (tying sequence) did not have the small, Ice Dub thorax beneath the wing. The ribbing is the tying thread. The bundled grey Zelon is tied atop the shank, bound down at the bend and at the front. The ribbing also helps to bind the body to the shank.
This pattern has been stupendous on lakes (Callibaetis emergers) and tumbled in the seams of rivers. Simple to tie, the Zelon/Antron colors can be varied (olive, tan, black, yellow) along with the thread color for ribbing. The hook shank could have a layer of lighter colored thread in order to give a two-toned look (dark top/lighter bottom). Size 16-18 hook. Adjust the size of the Zelon bundle and wing length.