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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington
Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Posts: 1
John on Sep 29, 2006September 29th, 2006, 9:38 am EDT
OK, I've always wanted to fish the Wolf, but never made it. Finally went this week. Read up on it; listened to the LaFontaine tape etc... Beautiful river, nice BWO hatch, no fish. Well, two nice sized chub. What's the story on the Wolf?

Did go up to the Hunting. There found several pods of fish (hundreds in a 6 ft circle). Are these my Wolf fish getting it on? If so why such a large pod?
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Sep 29, 2006September 29th, 2006, 3:02 pm EDT
I've never fished the Wolf, but it's got a reputation for being a bit like the Namekagon: great river, but without a lot of luck you're likely to walk away swearing the river has nothing but minnows the first dozen times you fish it. I'm sure some here know more about it, though.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
central wisconsin

Posts: 7
Bflat on Apr 16, 2008April 16th, 2008, 2:49 pm EDT
I fished the Wolf a lot in the 90's. It's the kind of river that's just on sometimes, and unaccountably off, others. Sometimes I'd have a great day, go again the next day under similar conditions and get skunked. The trout density is lower than the river looks like it should have. So lots of the fishy looking spots are void of trout. Solution: cover a lot of water, quickly. The Wolf suffers from high temperatures. I've heard it has not been fishing well in recent years. It's one of those rare midwestern streams that looks like a western freestone stream. Therein lies it's attraction, I think. Don't overlook the Wolf's smallmouths.


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