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 |
---|---|
Apical maxillary palpal segment small, asymmetrically set on penultimate segment | Apical maxillary palpal segment subequal in length to penultimate segment and symmetrically attached |
Tails 3/4 or less the length of the abdomen | Tails more than 3/4 the length of the abdomen |
Head and thoracic terga usually without a distinct pattern of dark and light pigments | Head and thoracic terga usually with a distinct pattern of dark and light pigments |
5 Example Specimens | 5 Example Specimens |
Chloroperlidae | Perlodidae |