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Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Mayfly Species Paraleptophlebia helena (Mahogany Dun)

This large species of Paraleptophlebia is one of the tusked group. Records indicate it is endemic to California where it fills the niche taken by Paraleptophlebia bicornuta in neighboring states. It usually hatches with the more common and very similar looking duns of Paraleptophlebia debilis.

Where & when

Time of year : Fall

This species is locally important in California only.

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Species Range
Common Name
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