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 one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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Caddisfly Species Lepidostoma griseum (Little Brown Sedges)
Where & when
Time of year : Late Summer and early Fall
Preferred waters: Small streams
In 29 records from GBIF, adults of this species have mostly been collected during August (52%), September (28%), and July (14%).
In 11 records from GBIF, this species has been collected at elevations ranging from 20 to 1909 ft, with an average (median) of 919 ft.
Species Range
Start a Discussion of Lepidostoma griseum
References
- LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
Caddisfly Species Lepidostoma griseum (Little Brown Sedges)
Species Range
Common Names
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Banks (1911)