Early in the spring, and if you are lucky. You can see huge hatches of Chironomids, midges. These hatches often bring the trout to life, and you can see the first rises of the year.
This pattern imitates when the midge are at their most vulnerable. When it has swim from the bottom to the surface, and now laying still waiting for the transformation into an adult insect.
Hook : Ahrex FW524 Superdry #12-18 or Mustad C49s #12-18
Tying Thread : Semperfli Classic Waxed thread 8/0, Black
Tail: Crystal Flash (two small pcs)
Ribbing : Semperfli Fine Wire 0,1mm, Red
Body : Semperfli Classic Waxed Thread 8/0, Black
Spot : Semerfli Fluoro Brite, Red
Shield : Semperfli Suede Chenille, White
Thorax : Semperfli Straggle String, Black
Which hook you choose to use, depends on how much you want the fly to curve. Yes, for the most right imitations it should be tied on a straight hook, but the meaning of the pattern is to lay down in the water with the body, and float on the chenille. Remember to use some cdc oil or similar on the chenille