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.
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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.
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Caddisfly Species Psilotreta frontalis (Dark Blue Sedges)
Where & when
Preferred waters: Best in small streams
In 21 records from GBIF, adults of this species have mostly been collected during June (57%) and May (33%).
In 23 records from GBIF, this species has been collected at elevations ranging from 20 to 4672 ft, with an average (median) of 2356 ft.
Species Range
Start a Discussion of Psilotreta frontalis
References
- LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
- Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.
Caddisfly Species Psilotreta frontalis (Dark Blue Sedges)
Species Range
Common Name
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Banks (1899)