» Genus Oligophlebodes (Little Western Dark Sedges)
4 species (Oligophlebodes ardis, Oligophlebodes mostbento, Oligophlebodes ruthae, Oligophlebodes zelti)
aren't included.
Common Name
. Where & WhenRegion: West
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.Hatching BehaviorTime Of Day (?): Midday
Egg-Laying BehaviorTime Of Day: Late afternoon
Females of this genus fall to the surface to lay their eggs.Larva & Pupa BiologyShelter Type: Stone
The cased larvae exhibit heavy behavioral drift (Behavioral drift: The nymphs and larvae of many aquatic insects sometimes release their grip on the bottom and drift downstream for a while with synchronized timing. This phenomenon increases their vulnerability to trout just like emergence, but it is invisible to the angler above the surface. In many species it occurs daily, most often just after dusk or just before dawn.) near midday for a couple months before emerging.
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