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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 Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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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Millcreek has attached these 11 pictures. The message is below.
Millcreek
Healdsburg, CA

Posts: 344
Millcreek on Dec 25, 2017December 25th, 2017, 4:26 am EST
These have all been taken from the Russian River within the last month. First from the top are photos of some Baetis tricaudatus and Baetis alius, next are Pteronarcys californica and Isoperla pinta, then a Chimarra sp. and last an Ameletus sp.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Jan 2, 2018January 2nd, 2018, 6:53 am EST
Nice to think that there's a bunch of those still alive right now under all that ice around here, including the Au Sable!

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...

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