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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.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture. From the Susitna River in Alaska

Stream photos

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Dorsal view of a Tricorythodes (Leptohyphidae) (Trico) Mayfly Nymph from Mystery Creek #308 in Washington
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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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Caddisfly Species Micrasema bactro (Little Grannoms)

Where & when

Time of year : Late June

In 34 records from GBIF, adults of this species have mostly been collected during July (35%), August (32%), May (15%), and June (12%).

In 18 records from GBIF, this species has been collected at elevations ranging from 1650 to 8566 ft, with an average (median) of 4862 ft.

Species Range
Map of specific collection sites

Hatching behavior

Time of day : Evening


Start a Discussion of Micrasema bactro

References

Caddisfly Species Micrasema bactro (Little Grannoms)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Trichoptera (Caddisflies)
  5. » Family Brachycentridae (Apple Caddis and Grannoms)
  6. » Genus Micrasema (Little Grannoms)
  7. » Species bactro (Little Grannoms)
Species Range
Map of specific collection sites
Common Name
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