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 |
---|---|
Larvae very slender | Larvae not slender |
Larvae without gills | Larvae with gills |
Pronotum broadest anteriorly in dorsal view and anteromedial notch of mesonotum deep (sf 19.425-19.427) | Pronotum broadest about middle in dorsal view and anteromedial notch of mesonotum shallow (sf 19.85, 19.421, 19.422) |
Constructing slender cases of silk (sf 19.456) or sand and silk (sf 19.28, 19.487, 19.488) | Constructing stouter cases of rock fragments, often with small stones arranged linearly along each side (sf 19.27, 19.484) |
Western distribution | |
3 Example Specimens | |
Uenoidae | Thremmatidae |