The black knotted midge is an ideal fly when small black flies are on the scene. Fish the fly on a floating line either static or using a slow twitching retrieve. Had numerous good size rainbows on the midge pattern over the last few years especially on an evening on the smaller sizes. A very good fly for Chub.
Run the tying thread down the hookshank to a place opposite the barb.
Catch in a small black hackle, make sure it is vertical and at 90° to the hookshank.
Wind the hackle a few times, tie off the hackle and secure with a whip finish.
Take the thread back along the hookshank a few times, creating a level body, make sure to leave enough space towards the eye for the second hackle and head.
Catch in a second small black hackle near the eye, make sure it is vertical and at 90° to the hookshank. Wind the hackle a few times, tie off the hackle, create a neat head and secure with a whip finish.
Varnish the head.