The stoneflies, or Plecoptera, of Illinois

摘要: The present paper, then, is a summary of our stonefly studies which have been more or less continuous since 1926. For completeness this report has not limited to the spring and summer forms but includes an entire survey plecopteran fauna Illinois, makes it possible classification unrestricted by seasonal idiosyncrasies species, genera orfamilies. It offers, too, opportunity add further data concerning some fall winter species available at time 1929 perhaps most important, enables presentation balanced comparative picture stoneflies state.