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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Caddisfly Species Limnephilus frijole (Summer Flier Sedges)

Where & when

In 25 records from GBIF, adults of this species have mostly been collected during May (20%), September (20%), August (16%), October (16%), June (8%), July (8%), and April (8%).

In 16 records from GBIF, this species has been collected at elevations ranging from 770 to 8005 ft, with an average (median) of 5030 ft.

Species Range

Specimens of the Caddisfly Species Limnephilus frijole

1 Female Adult

Start a Discussion of Limnephilus frijole

Caddisfly Species Limnephilus frijole (Summer Flier Sedges)

Taxonomy
Species Range
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