Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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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 Hydropsyche cockerelli (Spotted Sedges)
Where & when
This species may be found across the country but it is only really important in the West.
In 52 records from GBIF, adults of this species have mostly been collected during July (33%), June (33%), August (23%), and May (10%).
In 12 records from GBIF, this species has been collected at elevations ranging from 2238 to 9506 ft, with an average (median) of 5900 ft.
Species Range
Start a Discussion of Hydropsyche cockerelli
References
- LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
Caddisfly Species Hydropsyche cockerelli (Spotted Sedges)
Species Range
Common Name
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Banks (1905)