Salmonflies
Pteronarcys californica
The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
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This species was fairly abundant in a February sample of the upper Yakima.
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Stonefly Genus Isogenoides (Springflies)
Isogenoides olivaceus is a common species.
Genus Range
Specimens of the Stonefly Genus Isogenoides
1 Nymph
This large Perlodidae stonefly was a strikingly bright yellow color, more so than any other insect I've seen. I didn't enhance it much. See the discussion threads to follow how we identified this specimen, which was listed incorrectly for several years.
Start a Discussion of Isogenoides
Stonefly Genus Isogenoides (Springflies)
Taxonomy
Species in Isogenoides
Isogenoides doratusIndiana Springflies
0
0
Isogenoides hansoniAppalachian Springflies
1
11
Isogenoides olivaceusOlive Springflies
0
0
6 species (Isogenoides colubrinus, Isogenoides elongatus, Isogenoides frontalis, Isogenoides krumholzi, Isogenoides varians, and Isogenoides zionensis) aren't included.