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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
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 Glossosoma alascense (Saddle-case Makers)

Where & when

Time of year : July

This is one of the most important western species of Glossosoma.

In 42 records from GBIF, adults of this species have mostly been collected during June (29%), August (21%), July (19%), April (19%), and May (7%).

In 9 records from GBIF, this species has been collected at elevations ranging from 3524 to 9239 ft, with an average (median) of 5873 ft.

Species Range

Specimens of the Caddisfly Species Glossosoma alascense

1 Male Adult

Start a Discussion of Glossosoma alascense

References

  • LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.

Caddisfly Species Glossosoma alascense (Saddle-case Makers)

Taxonomy
Species Range
Common Name
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