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.
Described by Baumann, R.W. & Bottorff, R.L. (1997) Two new species of Chloroperlidae (Plecoptera) from California. The Great Basin Naturalist 57, 343–347.