Daphnia-feeding trout love green-and-black patterns, and this Orkney pattern is a great top-dropper pattern for any sinking-line work.
Hook: Size 10 Kamasan B170
Silk: Yellow Uni-Thread, 8/0
Tail: Black marabou
Underbody: Flat Mirage
Overbody: Yellow “edge” sheet
Wing: Black marabou with three or four strands of yellow Krystal Hair over
Cheeks: Gold Turrall Fire-Fly
Head: Artifly green-dyed deer hair with a few tips over the wing
Try this low-riding Mayfly Dun for fussy trout that refuse a high-riding dry-fly.