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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 Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington
This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.
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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Alloperla (Sallfly) Stonefly Adult Pictures

Ruler view of a Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana The smallest ruler marks are 1 mm.
Lateral view of a Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Dorsal view of a Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Ventral view of a Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana
Alloperla (Chloroperlidae) (Sallfly) Stonefly Adult from Rock Creek in Montana

This stonefly was collected from Rock Creek in Montana on July 9th, 2019 and added to Troutnut.com by Troutnut on July 18th, 2019.


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Alloperla (Sallfly) Stonefly Adult Pictures

Collection details
Location: Rock Creek, Montana
Date: July 9th, 2019
Added to site: July 18th, 2019
Author: Troutnut
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