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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

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

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Mayfly Family Neoephemeridae

See Neoephemera, the only genus in this family, for details about these large and uncommon mayflies.

Where & when

In 3 records from GBIF, adults of this family have been collected during June (67%) and May (33%).

In 9 records from GBIF, this family has been collected at elevations ranging from 1220 to 2546 ft, with an average (median) of 2188 ft.

Family Range

Specimens of the Mayfly Family Neoephemeridae

1 Nymph

Start a Discussion of Neoephemeridae

References

Mayfly Family Neoephemeridae

Taxonomy
Genus in Neoephemeridae
Neoephemera
1
7
Genus in Neoephemeridae: Neoephemera
Family Range
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