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.

Stream photos

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Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.

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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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Acroneuria lycorias (Golden Stone) Stonefly Nymph Pictures

This stonefly was collected from the Namekagon River in Wisconsin on January 13th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Nymph

Moved to Acroneuria lycorias

Posted by Entoman on Apr 8, 2013

Last reply on Apr 8, 2013 by Entoman

Here's a good example of an Acroneurinae species other than A. abnormis that can have a dark body. The presence of anal gills and a thick occiptal bar impinged by a black spot in the middle point to lycorias. The picture is dark and the angle gives the head the flat based triangle look of the Perlinae, but if you enlarge the photo and look closely, the pale occipital bar at the back of the head is located where the ridge should be, precluding that subfamily.

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