Rusty Sedge vs New Zealand Caddisfly

Side-by-side species comparison

Attribute Rusty Sedge New Zealand Caddisfly
Scientific Name Hydropsyche saxonica Olinga feredayi
Order Trichoptera Trichoptera
Family Hydropsychidae Conoesucidae
Size 10-13 mm 8-12 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Omnivores
Regions Europe New Zealand
Conservation Least Concern Least Concern

Rusty Sedge

A net-spinning caddisfly of clean upland European streams sensitive to organic pollution. Larvae construct fine-meshed capture nets between stones.

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Did You Know?

Its presence is used as a biological indicator of excellent water quality in European river assessments.

New Zealand Caddisfly

A stony-cased caddisfly endemic to New Zealand streams. Larvae are important grazers found in virtually all clean New Zealand rivers.

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Did You Know?

It is the most commonly encountered caddisfly in New Zealand freshwater surveys.