INTRODUCTOR\ NOTE. 



In the Eichteciith Report of the State Entomologist of Illinois — the 

 seventh of the pn^sent writer — was pnbhshed the first {)art of a mono- 

 g-raph of insect injuries to Indian corn, treatint;- of injuries to the planted 

 seed and to the roots. The present report is in continuation of the fore- 

 going, and relates to injuries to those parts of the corn j)lant which are 

 exposetl al)ov(^ ground. Both divisions of this text have been made 

 to include a discussion of more than the strictly injurious species, this 

 second part esj)e('ially giving ]iractically eq\ial attention to the corn 

 insects g(MUM-ally, whether of present economic importance or not. I 

 have, however, divided them into "the more important," "the less 

 important," and "the unimi)ortant" species, ami have treated those 

 notably injurious in a strictly practical manner with a mininumi of 

 technical discussion. 



In ]ire]iaring this pai)er fen- ])ublication 1 have of course drawn 

 frcH^ly on all sources of informalion known to me, Init owing to the large 

 mnnber of species incliuled it has l)een impossible to give in so I)rief and 

 comprehensive a pajwr my authorities in detail, or even to distinguish 

 new n\atter from old, or contributions of this ollice from those made by 

 numerous other workers in this field. I have, however, compensated 

 for this dehciency as well as I could by printing a list of the species 

 discussed, with fairl>- full bibliograi)hical references to the economic 

 literature of each. 



I am under unusual obligations to jMr. C. A. llart for aid in the col- 

 lation and organization of the material for this report and in (he prepara- 

 tion of manuscript, especially that on the more technical parts of the 

 subject. Most of the figures originating in this olllce — several of which 

 are here printed for the first time — are horn di-a wings made by Mrs. 

 L. M. (Hart) GrcHMi; and the responsibility of seeing the report through 

 the press has fallen mainly upon Miss j\I. J. Snyder, for many years 

 Secretary of the State Laboratory of Natural History and proof-reader in 

 my entomological office. I am indebted for many of the illustrations 

 here used to Dr. L. O. Howard, Professor F. L. Washburn, Mr. Wm. 

 Beutenmiiller, Professor M. V. Slingerland. Dr. A. T. Neale, Professor 

 John B. Smith, Director C. E. Thorne. and Dr. W. E. Britton. 



S. A. FORBES, 

 Illinois Stale Entiwiol agist. 



