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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Male Baetidae (Blue-Winged Olive) Mayfly Dun Male Baetidae (Blue-Winged Olive) Mayfly Dun

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington

This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.

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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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Dolophilodes (Medium Evening Sedge) Caddisfly Larva Pictures

I think this larva best fits Dolophilodes, in which the anterior margin of the frontoclypeus is supposed to be "slightly asymmetrical." I can't confidently make out the asymmetry, but the other genera are supposed to have either greater asymmetry or a symmetrical, but convex, shape, whereas this one is clearly concave.

Based on distribution records, the species should be either aequalis, dorcus, or pallidipes, but I can't find any source to distinguish between them.

Dolophilodes (Philopotamidae) (Medium Evening Sedge) Caddisfly Larva from the East Fork Big Lost River in Idaho

Dorsal view of a Dolophilodes (Philopotamidae) (Medium Evening Sedge) Caddisfly Larva from the East Fork Big Lost River in Idaho

Ruler view of a Dolophilodes (Philopotamidae) (Medium Evening Sedge) Caddisfly Larva from the East Fork Big Lost River in Idaho The smallest ruler marks are 1 mm.

Some goo (to use the technical term) leaked out the mouth of this one during preservation in alcohol, making it hard to get a perfectly unobscured view of the head under the microscope.

Dolophilodes (Philopotamidae) (Medium Evening Sedge) Caddisfly Larva from the East Fork Big Lost River in Idaho

This caddisfly was collected from the East Fork Big Lost River in Idaho on August 3rd, 2020 and added to Troutnut.com by Troutnut on August 19th, 2020.

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