Marbled Sedge vs Giant Case-Builder Caddis

Side-by-side species comparison

Attribute Marbled Sedge Giant Case-Builder Caddis
Scientific Name Hydropsyche contubernalis Phryganea bipunctata
Order Trichoptera Trichoptera
Family Hydropsychidae Phryganeidae
Size 12-18 mm 18-25 mm
Habitat Rivers & Streams Ponds & Lakes
Diet Omnivores Omnivores
Regions Europe Europe
Conservation Least Concern Least Concern

Marbled Sedge

A net-spinning caddisfly with distinctly marbled wing patterns. It is common in larger European rivers and is tolerant of moderate levels of organic enrichment.

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Did You Know?

Marbled sedge larvae are territorial and will aggressively defend their net-spinning sites from rivals.

Giant Case-Builder Caddis

A large caddisfly with spotted wings found in northern and central Europe. Larvae construct conspicuous helical cases from plant material in weedy waters.

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Did You Know?

Its larvae are among the few caddisflies known to actively prey on other aquatic invertebrates.