march brown mayfly

the other day (3/15) march browns were emerging from one of the local steelhead rivers and the trout were up after them. rhithrogena morrisoni (that’s the scientific name) of the mottled wing brown early spring may fly that feed rising trout. western march browns (or simply march browns) are your first “easy-to-see” mayfly hatch of the new season. the march brown nymph in sizes #12 and #14, or a pheasant tail nymph of the same size, will be your bread and butter flies. march brown nymphs are flat hydrodynamic shaped clinger/crawlers with an underside that is cupped, with the gill plates forming a sucker to help hold the nymph to rocks in extremely fast water. the guides choice hares ear is a valuable pattern to have with you, and will sometimes out-fish the more realistic patterns. for this reason, trout will congregate in places where fast riffles start to slow down and on the seams between the fast and slow water. start by fishing the slower water first with flies that are lightly weighted.




as the water warms at mid-day the nymphs rise toward the surface to hatch. as the duns begin to hatch, trout will rise to the surface to catch them. big trout rising to march browns during the peak of the hatch can be very splashy. the soft hackle is often even more effective if you add a march brown dry fly to a dropper 1′ to 3′ from your soft hackle and fish both flies dead drift. our friends that fish the mckenzie report march browns that are shades of gray. duns and emergers produce the best fishing, but some trout will sip spinners in the quietest of water. the best tackle to fish the march browns is a 9′ #4 or #5 weight rod with an action that works easiest at the 20′ to 50′ cast range. remember the best fly is the one that is perfectly placed in a risers feeding lane.

vicarium are typical eastern mayflies and rhithrogena hatch in the west. eastern hatches end in june, western hatches of different species of rhithrogena continue through the summer, featuring hatches that can be intermittant, and can extend most of the day. the march brown nymph is classified as a clinger nymph, which are flat, wide bodied insects. during this migration, dead drift a nymph as close to the bottom of the river, which is where trout are watching.

emerging mayflies are a favorite of trout because they are defenseless during this part of their lifecycle, and slow to become airborne. march brown adult2 days after emerging, the dun molts to a sexually mature spinner, mates, and the female returns to the river to lay eggs. spinner falls usually occur in the evening, which can be an important of the eastern march brown life cycle, and an important source of food for trout. you can revoke your consent to receive emails at any time by using the safeunsubscribe® link, found at the bottom of every email.

march brown nymphs are flat hydrodynamic shaped clinger/crawlers with an underside that is cupped, with the gill plates forming a sucker to help the british have a true march brown, a mayfly that hatches in march. the western march brown is a bit more tan, and doesn’t really establish often until april. the march brown mayfly adult is short-lived, but its very presence is a sign that the water is clean and the fish will be biting. ; identifying, eastern march brown mayfly, eastern march brown mayfly, western march brown mayfly, march brown fly pattern, march brown insect.

this species contains the two classic eastern hatches formerly known as stenonema vicarium and stenonema fuscum, the “march brown” and “gray fox.” entomologists march brown is the native fly on my favorite trout stream in the northern adirondacks. the stream is ~10 yards wide, runs through a very remote wilderness area, march browns are a collective name for multiple mayfly species, including maccaffertium vicarium and heptageniidae rhithrogena., march brown soft hackle, hendrickson mayfly, brown mayfly nymph, quill gordon mayfly, grey fox mayfly, green drake mayfly, sulphur mayfly, mayfly identification, rhithrogena morrisoni.

When you try to get related information on march brown mayfly, you may look for related areas. eastern march brown mayfly, western march brown mayfly, march brown fly pattern, march brown insect, march brown soft hackle, hendrickson mayfly, brown mayfly nymph, quill gordon mayfly, grey fox mayfly, green drake mayfly, sulphur mayfly, mayfly identification, rhithrogena morrisoni.