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 species was fairly abundant in a February sample of the upper Yakima.
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Autumn Mottled Sedges
This common name refers to only one genus. Click its scientific name to learn more.
Caddisfly Genus Neophylax
These are often called Autumn Mottled Sedges.
In his tables in Caddisflies, Gary LaFontaine ranks this as the fourth most important genus in the Pacific Northwest, where the main species are Neophylax rickeri and Neophylax splendens, but other species may be important across the country. Swisher and Richards in Selective Trout say that Neophylax fuscus is very important in the Midwest.
This large caddisfly looks really neat close-up.
See 2 more specimens...
References
- LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
- Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.