Every spring the big brown variegated mayfly commonly referred to as the Fox comes out and they are very prolific in many waters here in the Midwest and East Coast. Some of the largest hatches of Fox (scientific name Stenonema Vicarium) I've experienced were in Canada on the Grand River. These are very athletic mayflies having large abdomens, wings, and legs. The movements are much more erratic than the graceful summer specimens. The trout take these mayflies with a certain verve and typically the takes are splashy and abrupt. I've modified the pattern over the years using CDL Pardo Medio feathers for tailing fibers that are stiff and have wonderful barred amber and black segments. For wings I use my usual hen tips dyed ginger, and for the abdomen I use a rusty tan peacock quill coated with varnish. Barred ginger hackle really sets this fly apart because these mayflies have a lot of variegation probably more so than any other mayfly. Barred ginger hackle mimics the fine varie...