Invicta Flies - Black Gnat
This favorite is good in all sizes, and can be hatch specific or general purpose. It's appeal probably stems from the strong silhouette created by the dark colors. Here I have substituted hen hackle tips for the wings, which will hold their shape much better than the traditional mallard quill segments.
Hook: Mustad 94840, #20-16
Thread: Danville Prewaxed 6/0 black
Tail: black hackle fibers
Wings: black hen hackle tips
Body: black beaver or mink dubbing