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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.

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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Pale Gray-Winged Sulphur Duns

This common name refers to only one species. Click its scientific name to learn more.

Mayfly Species Anafroptilum album

These are very rarely called Pale Gray-Winged Sulphur Duns.
This species is mentioned in the angling literature, but little detail is ever given about its hatches. It has been reported to inhabit warm water, but information regarding cold water habitat is sketchy.
Female Anafroptilum album (Baetidae) (Tiny Sulphur Dun) Mayfly Dun from the Fall River in California
Approx. 5 mm. This is a very significant hatch. It is mostly seen at the height of Summer and I was very surprised to see it emerging this late in the season and in such numbers. When this one is emerging, the fish can become quite selective.

Pale Gray-Winged Sulphur Duns

Scientific Name
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