Amphiesmenoptera is an insect superorder, established by Willi Hennig in his revision of insect taxonomy for two sister orders: Lepidoptera (butterflies and moths) and Trichoptera (caddisflies).
Mayflies (Ephemeroptera), caddisflies (Trichoptera), and stoneflies (Plecoptera) are the most common insects in these undisturbed streams.
Large populations of species in the insect orders Ephemeroptera, Plecoptera and Trichoptera.
An inventory in late 1999 / early 2000 also documented larvae of Chironomidae flies and Asellus aquaticus crustaceans; A few species of beetles and caddisflies, including species more typical for moist environments such as wetlands and marshes.
Biological monitoring metrics have been developed in many places, and one widely used measure is the presence and abundance of members of the insect orders Ephemeroptera, Plecoptera and Trichoptera.