The Thrips, or Thysanoptera, of Illinois

Abstract

This article is presented to make our tiny thrips better known—to show what thrips really are, to explain which ones are harmful and which ones are beneficial, and to introduce the many thrips that are of no direct economic consequence to man but are a part of the native fauna of Illinois. As will be shown, thrips are exquisite creatures, complicated in form, delicate in habit, and most dis- tinct from the usual run of insects. About 200 species of thrips have been collected in Illinois. Herein is an account of those species and of some others that may occur, but so far have not been found, in our state.