Spotted Hydropsyche Caddisfly vs Great Grey Sedge

Side-by-side species comparison

Attribute Spotted Hydropsyche Caddisfly Great Grey Sedge
Scientific Name Hydropsyche slossonae Arctopsyche grandis
Order Trichoptera Trichoptera
Family Hydropsychidae Hydropsychidae
Size 10-14 mm 20-30 mm
Habitat Rivers & Streams Mountains
Diet Detritivores Omnivores
Regions Eastern North America North America
Conservation Least Concern Least Concern

Spotted Hydropsyche Caddisfly

A net-spinning caddisfly with tan to brown mottled wings. Larvae build intricate silken nets between rocks to capture drifting food particles in stream currents.

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Did You Know?

The mesh size of their silk nets varies by species, allowing different species to partition food resources in the same stream.

Great Grey Sedge

One of the largest net-spinning caddisflies in North America with a wingspan over 40 mm. Larvae build robust catch-nets in powerful mountain torrents.

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Did You Know?

Larvae are partially predatory, consuming small invertebrates trapped in their nets alongside organic debris.