Broken tassels with 

 extrusions of saw- 

 dust-like material 

 at the breaks are the 

 plainest signs of an 

 infested field. 



Holes in the stalk 

 with sawdust-like 

 debris extruded 

 indicate where 

 the borer is at 

 work. 



it IT The borer enters 

 tin the ears through 

 the husks and also 

 through the stem 

 and cob. 



ROPEAN 



BORER 



is the caterpillar 



of a small moth.. 



The mbths lay their 

 egg's in flat masses, 

 on the under sides 

 of the corn leaver. 



The caterpillars 

 hatch from these eggs 

 feed at first on the leaves,Lut 

 soon bore into the tassels, the 

 stalk.the leaf-ribs and the ears 

 They live in th e, 

 all winter and 

 in spring change 

 to reddish-brown pupae, 

 which soon transform 

 again to moths.. 



The pest also attach 

 other garden plante.weeo's, 

 and larger grasses t and lives 

 through the winter in the, 



stalks of th ese plan ts as 



\yett as in corn. . 



Burn All Plants Containing Caterpillars. 



Cornstalks, corn stubble, grasses, weeds, and 

 stalks.of garden plants should be thus d( 

 throughout infested areas during" fall, 

 winter or early spring. No other effective 

 method is known for combating' this pest. 



Stubble and scattered stalks - 

 where the borer spends 

 the winter* in corn. 



FIG. 149. Department of Agriculture warning against the European corn 

 borer. (After Caffrey, Farmers' Bulletin 1046.) 



174 



