Zwick, Peter Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;
Zwick, P., & Mendl, H. (1989). Notes on Plecoptera (19) Isoperla lugens (Klapálek, 1923), replaces I. alpicola Brinck, 1949. Aquatic Insects, 11(2), 72-72.