The Chironomidae, or Midges, of Illinois, With Particular Reference to the Species Occurring in the Illinois River

Abstract

In this paper I have introduced in descriptions of genera and species a few characters which have not previously been used by writers in dealing with the family. I have in every case endeavored to findcoordinated characters in the sexes, and in dealing with the genera I have, wherever possible, associated the characters found in the adults with a certain set of characters found in larvae and pupae.