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.
Option 1 | Option 2 |
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Large, operculate gills attached to abdominal segment 2 extend about half the length of the abdomen | Most gills are smaller and plate-like with branched tufts beneath However, a few species have enlarged gills attached to abdominal segment 4 |
Remaining families: Caenidae and Leptohyphidae | |
5 Example Specimens | 5 Example Specimens |
Go to Couplet 14 | Ephemerellidae |