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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 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.
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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Definition of 'medial cell' in Caddisflies

Definition of 'medial cell' in Caddisflies

Medial cell: The medial cell (denoted mc) in many caddisfly wings is formed by the branching of the media into MA and MP and closed apically by the medial crossvein.

These other words reference the same concept: mc, cell mc, mc cell.
This Hydatophylax argus caddisfly does not have a medial cell because there is no medial crossvein to close it, so I filled in where that crossvein would be in purple.
This Hydatophylax argus caddisfly does not have a medial cell because there is no medial crossvein to close it, so I filled in where that crossvein would be in purple.
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