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"Spotted Sedges" are a major, highly productive group of caddisflies, primarily from the genus Hydropsyche, which are crucial to trout fishing across North America. They are often called "net-spinners" because the larvae build stationary web retreats to catch food.
Here are the key facts about Spotted Sedges:
Life Cycle & BehaviorNet-Spinners: Unlike free-roaming caddis larvae, Hydropsyche larvae build funnel-shaped, silken traps between rocks and sticks in moving water to capture food."Leash" System: They often roam around their rocky habitat, trailing a silk strand that acts as a safety line to prevent them from being washed away.
Prolific Hatches: They can have two or more generations in a single fishing season, providing a consistent food source from spring through fall.Unique Emergence: Pupae swim to the surface to emerge, often creating frantic feeding activity by trout.Egg-Laying Dives: Females are "diving" caddis; they dive under the surface and swim to the bottom to lay eggs.
