Tube-Making Caddis vs Tansy Beetle

Side-by-side species comparison

Attribute Tube-Making Caddis Tansy Beetle
Scientific Name Psychomyia flavida Chrysolina graminis
Order Trichoptera Coleoptera
Family Psychomyiidae Chrysomelidae
Size 5-8 mm 7-11mm
Habitat Rivers & Streams Rivers & Streams
Diet Gall Makers Herbivores
Regions North America Europe
Conservation Least Concern Near Threatened

Tube-Making Caddis

A small caddisfly whose larvae build silken tubes cemented to rock surfaces in rivers. The tubes create a network of galleries on submerged stones.

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Did You Know?

Entire rock surfaces can be covered in a patchwork of silken tubes built by dense colonies.

Tansy Beetle

A stunning metallic green and copper beetle covered in tiny pits. It is one of the rarest beetles in Britain.

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Did You Know?

In the UK it survives in only a small stretch along the River Ouse near York making it one of Britains most localized insects.