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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.

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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 Genus Psychomyia (Dinky Purple Breasted Sedges)

Where & when

In 142 records from GBIF, adults of this genus have mostly been collected during June (25%), July (22%), May (16%), August (15%), and September (6%).

In 94 records from GBIF, this genus has been collected at elevations ranging from 20 to 8924 ft, with an average (median) of 2723 ft.

Genus Range

Start a Discussion of Psychomyia

References

  • LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.

Caddisfly Genus Psychomyia (Dinky Purple Breasted Sedges)

Taxonomy
Species in Psychomyia
Psychomyia flavida
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Species in Psychomyia: Psychomyia flavida
2 species (Psychomyia lumina and Psychomyia nomada) aren't included.
Genus Range
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