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.
Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.
Source: Leuctra Schusteri, A New Stonefly Species (Plecoptera: Leuctridae) Of The Leuctra Tenuis (Pictet) Group From The Southeastern Usa
Male. The 7 th abdominal dorsal process is large and broadly rounded posteriorly; subtle lateral lobes are evident on central Appalachian populations and further north into New England (Figs. 1 - 2) but essentially absent from northwestern Alabama near the southwestern edge of this species range (Fig. 3). The specilla varies from triangular with a broad base (Fig. 8) to ca. parallel-sided (Fig. 6); distally the specillum is subtriangular with tubercles present and also along the distal outer margin (Figs. 4 - 9). The subanal lobes extend nearly to tip of the specilla, recurved anteriorly in posterior half (Figs. 4, 6 - 9).