1» 



date shows when tho pjrourul should ])0 plowed for forn iti fnll; and 

 the second, when it may safely be f)l;uile(l or re[)laiited to ccmh in si^ririf^. 



Cutworms entering the corn field fiotn [pastures or meadows adjoining, 

 may V^e effectively and chcjaply f)oisoned by placing along the; erlges of 

 the field fresh clover or other succulent vegetation wfiich has been cut 

 after spraying thoroughly with Paris green stirred up in water at the rate 

 of a pound to fifty gallons. 



The sixteen species whose names are placed at the liead of this sec- 

 tion have all been found injuring corn — only the first nine of them, how- 

 ever, notaV^ly harinrnl 1o 1,h;it crop in Illinois. 



u 



TiiK (j1j>assv ('\vr\\'<>ii>A. 

 JIadena devastalrix Jjra(;e. 



This is a translucent, whitish caterpillar (Fig. 1), sliglitly tinted with 

 V>luish green, without body sjjots or blotches, the head red or red-brown, 

 and the neck-siiield brownish. Its appearance has been quite aptly 

 characterized as midway between that of a white-grub and a common 

 cutworm. It is quite similar to the yellow-headed cutworm next de- 

 scribed, from which it is most readily distinguished by its darker head 

 and neck-shi(!ld, and the lighter color of its 

 body. 



In view of the destructive nature of its 

 attacks, its wide-spread range and great 

 abundance, and the numerous published 

 reports of serious injury to crops, this cut- 

 worm may be properly regarded as the most 

 serious pest of its kind to corn and grass. 

 It is rarely seen above ground, but works 

 mainly in a burrow beneath the surface, 

 feeding principally at night, eating off the 

 Toots close to the base of 1h(; Hi(;ni, or (fitting 

 off the latter under gnmnd. 



We have found it very destructive Uj 

 corn in Peoria and Henry counties, and 

 frequently occurring in corn hills in various 

 parts of the state. A. J. Cook re[)orts it as 

 injurious tfj com in Michigan; Lintner, in 

 New York; and Harvey, in Maine. Cillette 

 pronounces it the most abundant and destructive cutworm in corn and 

 grass in Iowa; Smith reports it as one of the most destructive of its kind 

 in New Jersey; and Fletcher finds it injurious in Manitoba. It frequently 

 becomes so numerous in meadows as to ha notably injurious to grass. In 



n 





r 



Firi. 1. The Glassy Cutworm 

 (I/a/lena dev/mUitrix), back and 

 niije views. KiilnrKed. 



