Order: Trichoptera

Around 851 species recorded in Australia, contained within 27 families. Body elongated and two pairs of variably sized hairy wings, the forewings larger than the hindwings in some species, but the other way round in others. Antennae long and filamentous, curled in some species and mouthparts simple, lacking the curled proboscis found in the superficially similar moths. Larvae are aquatic, with developed legs and mandibles, and typically live in a case made of silk with various materials attached to the outside.