Great Basin Naturalist


Selected stonefly genera found in North America are classified as to their occurrence in: cold lotic, warm lotic, or lentic habitats. Most genera occur only in the cold lotic, but several occur both in cold and warm lotic systems. Few are found exclusively in warm lotic habitats and almost none in lentic. Lake or true lentic inhabits are found to usually be cold lotic species which have adapted to life in the wave-washed shores of cold mountain lakes.

Even though data at the specific level would be even more useful, especially where different faunal regions are involved, stoneflies are probably the best insect indicators of aquatic environmental quality at the generic level.