March Brown Spider

The March Brown Spider is a classic, highly effective soft-hackle wet fly pattern used primarily to imitate emerging March Brown. The March Brown Spider is used primarily during the spring season across nearly every major trout-fishing region of the United States, though its exact timing shifts depending on the part of the country. Because it is a soft-hackle wet fly that suggests life rather than perfectly matching one specific bug, it functions as a highly effective "searching" pattern all year long, but it excels during the specific March Brown mayfly hatches.