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> > Grindstone Lake Wisconsin mayfly hatch

Dave_K has attached these 2 pictures to aid in identification. The message is below.
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Dave_KJuly 1st, 2008, 8:23 pm
Posts: 6The mayflys in the attached photos hatch in great numbers for days, maybe weeks on Grindstone Lake near Hayward, Wisconsin. I'd like to know what kind they are, and any patterns recommended to match. Photos were taken June 25, 2008. Thanks, .....Dave
GONZOJuly 1st, 2008, 8:41 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
Dave, they are Brown Drakes (Ephemera simulans). The ones in the photos are male spinners. I'll let others suggest patterns for the adults. My favorite is a wiggle nymph pattern designed to imitate the slender burrowing nymphs as they swim toward the surface.
WiflyfisherJuly 2nd, 2008, 4:38 am

Posts: 617
I have great success during the Ephemera simulans hatch on the rivers by you using an extended-body comparadun dryfly. As Gonzo stated a wiggle nymph works the best imitating the emerging nymphs.
John S.
Dave_KJuly 2nd, 2008, 7:35 pm
Posts: 6Thanks very much GONZO and Wiflyfisher. While I'm more likely to fish for walleye in 15 feet with a split shot and leech, I won't go back to Grindstone without a brown drake pattern. Dave K

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