I have never seen Siphlonurus autumnalis mentioned in the angling literature, but these flies would be a good mouthful for a trout and could be important if they're ever found in abundance. Where & When
» Species autumnalis (Gray Drake)
Region:The name seems to suggest a fall emergence, which would explain why I caught one at the end of September in the Washington Cascades.Spinner BehaviorMy only encounter with this species was with ovipositing females late in the morning on a sunny day.
WestTime Of Year (?):
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