Black Sedge vs Giant Caddisfly

Side-by-side species comparison

Attribute Black Sedge Giant Caddisfly
Scientific Name Silo nigricornis Phryganea grandis
Order Trichoptera Trichoptera
Family Goeridae Phryganeidae
Size 7-9 mm body 25-30 mm
Habitat Rivers & Streams Ponds & Lakes
Diet Omnivores Herbivores
Regions Europe Europe, Asia
Conservation Least Concern Least Concern

Black Sedge

A caddisfly whose larvae build heavy cases from sand grains cemented with silk. Found in clean, stony streams. Cases have lateral flanges of larger stones for ballast.

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Did You Know?

Larval cases have added flanges of larger stones that act as ballast, preventing the case from being swept away.

Giant Caddisfly

The largest European caddisfly with mottled brown-and-cream wings spanning up to 60 mm. Its larvae build portable cases from spirally arranged plant fragments.

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Did You Know?

Giant caddisfly larvae construct their cases in a beautiful spiral pattern from carefully cut pieces of leaves and stems.