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 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.
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Medium Evening Sedges
This common name refers to only one genus. Click its scientific name to learn more.
Caddisfly Genus Dolophilodes
These are often called Medium Evening Sedges.
Dolophilodes distinctus is the most interesting and important species in this genus, having a bizzarre life cycle. It is also the most abundant in the East and Midwest. The other species listed here are from the West.
See 3 more specimens...