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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.

View from atop the permafrost slump From the Selawik River in Alaska

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Coleoptera (Beetle) Insect LarvaColeoptera (Beetle) Insect Larva
Lateral view of a Coleoptera (Beetle) Insect Larva from Sears Creek 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 Genus Oligophlebodes (Little Western Dark Sedges)

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Where & when

Time of year : August and September

All Oligophlebodes species of significance to fly fishermen occur in the West.

They also occur, but not in significant numbers, in the Midwest.

In 39 records from GBIF, adults of this genus have been collected during August (44%), July (28%), June (13%), September (8%), and May (8%).

In 13 records from GBIF, this genus has been collected at elevations ranging from 2733 to 11191 ft, with an average (median) of 6250 ft.

Genus Range
Map of specific collection sites

Hatching behavior

Time of day : Midday

Egg-Laying behavior

Time of day: Late afternoon

Females of this genus fall to the surface to lay their eggs.

Larva & pupa biology

Shelter type: Stone

The cased larvae exhibit heavy behavioral drift near midday for a couple months before emerging.

Start a Discussion of Oligophlebodes

References

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

Caddisfly Genus Oligophlebodes (Little Western Dark Sedges)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Trichoptera (Caddisflies)
  5. » Family Thremmatidae
  6. » Genus Oligophlebodes (Little Western Dark Sedges)
Species in Oligophlebodes
Oligophlebodes minuta
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0
Oligophlebodes sierra
0
0
Oligophlebodes sigma
0
0
Species in Oligophlebodes: Oligophlebodes minuta, Oligophlebodes sierra, Oligophlebodes sigma
4 species (Oligophlebodes ardis, Oligophlebodes mostbento, Oligophlebodes ruthae, and Oligophlebodes zelti) aren't included.
Genus Range
Map of specific collection sites
Common Name
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