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Published online by Cambridge University Press: 31 May 2012
The following list is furnished in compliance with the request of the Editor of the Canadian Entomologist, published some time ago, some unsettled questions regarding species and distribution having delayed its preparation from time to time.
The list is intended to be as complete as possible, and to include all described species known to have been taken within the State limits, or so nearly adjacent thereto as to certainly belong to the Illinois Fauna. In order to roughly designate the distribution within the State I have attached an to all species from the northern portion, of whose capture I have personal knowledge, and have further affixed a to such species as are not known to occur in the southern portion of the State.