The Trichoptera (caddisflies or, more correctly, Caddises) are an order of insects, somewhat related to moths. There are just under 200 species in the British Isles.

The name Trichoptera means 'hairy-winged', and they differ from moths and butterflies in having hairs rather than scales on their wings, amongst other differences.

A photograph of a caddisfly larvae

A photograph of a a caddisfly larvae.
Photograph by Aka licensed under Creative Commons.

Other names for (or types of) Trichoptera include:

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