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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Hind wings with second longitudinal vein forked (sf 13.257), with the vertex of fork proximad toward the wing base | Hind wings present or absent, but if present, then hind wings with second vein either simple or forked with vertex of fork distally beyond the middle of the hind wing (some individuals of Baetis magnus and Baetis diablus may key here, with small round terminal segments of the forceps) |
Terminal segment of male forceps elongate | |
Remaining genera: Acerpenna, Americabaetis, Baetis, Baetodes, Cloeodes, Moribaetis, Paracloeodes, and Plauditus | |
5 Example Specimens | |
Diphetor | Go to Couplet 15 |