Order Trichoptera (caddisflies)
245. CADDISFLIES, many species. Immatures can be collected in streams and rivers by placing a net downstream and dislodging objects such as rocks and submerged vegetation. Examine the submerged objects for larval cases and the net for dislodged larvae that floated downstream. Immature stages should be preserved in alcohol. Adults can be collected from lights at night, killed by freezing or in a toxin-containing jar. They should be pinned similar to small moths.