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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 Genus Neureclipsis (Little Red Twilight Sedges)

This genus is reported to be important on trout streams sometimes, but not often. The only species individually mentioned is not considered to be important.

Where & when

In 276 records from GBIF, adults of this genus have mostly been collected during June (24%), July (22%), May (19%), August (18%), and September (12%).

In 99 records from GBIF, this genus has been collected at elevations ranging from 3 to 4544 ft, with an average (median) of 1178 ft.

Genus Range

Larva & pupa biology

Current speed: Slow

Shelter type: Nets

Gary LaFontaine describes the unique net arrangement of these larvae in Caddisflies:

The carnivorous larvae string their trumpet-shaped nets on debris and rooted plants poking up from the bottom. They arrange them vertically on the object, each net filtering its victims from one little slice of the water column.

Start a Discussion of Neureclipsis

References

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

Caddisfly Genus Neureclipsis (Little Red Twilight Sedges)

Taxonomy
Species in Neureclipsis
Neureclipsis crepuscularis
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Species in Neureclipsis: Neureclipsis crepuscularis
5 species (Neureclipsis bimaculata, Neureclipsis melco, Neureclipsis piersoni, Neureclipsis timesis, and Neureclipsis validus) aren't included.
Genus Range
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