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.
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This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.
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Little Plain Brown Sedges
This common name refers to only one genus. Click its scientific name to learn more.
Caddisfly Genus Lepidostoma
These are sometimes called Little Plain Brown Sedges.
This genus is important for trout anglers. Many species of Lepidostoma produce excellent hatches, especially in the West. Lepidostoma can be very prolific in spring creek environments or smaller runoff streams with springs. Lepidostoma togatum is the most important species of this genus in the East and Midwest. The West has several species that are important.
These specimens are still alive, just very cold, so the colors are accurate. I put them in the freezer for a bit to settle them down and overdid it a little:)
The photo of the specimen cased is alive. The photo of the uncased larva is the same specimen taken after it was preserved in its case. Unfortunately, there was a lot of pigment transfer making the specimen look olivaceous. In life it was grayish white as shown in the first photo.
See 7 more specimens...