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Ephoron leukon (mayfly hatch)Ephoron leukon is a very prolific mayfly hatch that can come off in such numbers that it appears like a white snow blizzard of mayflies. Ephoron leukon and Ephoron album are commonly found across the country on many streams and rivers and is often referred too as the White Fly hatch. In August, some Wisconsin rivers and streams will explode at dark with white mayflies dancing across the water. It's an amazing sight to behold! Ephoron leukon is a burrowing nymph and lives in the sand and silt bottom areas of the stream bed. They begin hatching in August at dusk and continue into the twilight hours. The nymphs seem to quickly rise to the surface to emerge as a dun and fly off. The male duns quickly molt into spinners (2 tails) and come back over the water to mate with the female mayflies carrying their yellow egg sacks (females don't molt). Unlike other mayfly species, Ephoron leukon emerges, mates, lays their eggs and dies all in the same night. Shortly after mating the surface of the river is blanketed with hundreds of spent, floating white mayflies. The hatch lasts for 2-3 weeks and gives fly fishermen a great opportunity to hit this hatch right. Although you may try nymph patterns, emergers, duns and spinner patterns seem to work the best. Be sure to have a good flash light to switch flies in the twilight hours. Click on a sulphur pattern to see a larger view
Page Review
Hatch Reviewed: Mayflies: Ephoron luekon Hatch By: John Simonson Hatch Rating: 4.0 Date: 23 May 2009 Page Review: The Ephoron luekon hatch is a major Wisconsin hatch on some Wisconsin rivers and this page gives you a general overview about the hatch. |
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