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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Prominent coniform penes cover present between forceps bases, extending nearly two-thirds the length of forceps bases | Penes cover reduced to a low rectangular mass or absent |
Male compound eyes nearly contiguous posteriorly and widely divergent anteriorly (when viewed dorsally) | Male compound eyes variable |
Hind wings absent | Hind wings present or absent |
Rare | |
Remaining genera: Acerpenna, Americabaetis, Baetis, Baetodes, Cloeodes, Diphetor, Moribaetis, Paracloeodes, and Plauditus | |
5 Example Specimens | |
Apobaetis | Go to Couplet 14 |