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 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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Definition of 'masking hatch'
Definition of 'masking hatch'
Masking hatch: When two types of insects are on the water simultaneously and the trout are feeding on the less noticeable one, the more prominent insect (usually brighter and/or larger but less abundant) is known as a masking hatch.
This other word references the same concept: masking hatches.
This other word references the same concept: masking hatches.