& Farmers’ Bulletin 1294. 
The egg clusters of the insect have also been found in the field on 
dandelion..° horseradish,!’ lettuce,!® oxalis,!® plantain,?? and rye.?2 
Borers have been reared experimentally upon these plants and also 
upon blue-grass.”* 
CHARACTER OF INJURY TO CORN. 
The most serious injury caused by the European corn borer to 
corn is through the work of the larve, or borers, in the ears and 
stalks. The borers also tunnel within the tassel, the midrib of the 
leaf, the brace roots, the stubble, and in fact all parts of the corn 
plant except the fibrous roots. In addition they often feed to a slight 
"1c, 8.—Newly developed tassel of corn Fig. 4.—Broken corn tassel showing injury 
plant, showing injury by young larve of caused by larve of the European corn borer. 
the European corn borer. Note small (Caffrey.) 
enawed areas on leaves at right caused 
by feeding of newly hatched larve. 
extent upon the surface of the plant, particularly upon the leaf blades 
(Fig. 1), the tassel buds, the husks and silk of the ear, and between 
the leaf sheath and the stalk. 
The character of the injury to corn depends upon the stage of 
erowth of the plant when attacked, and also upon the habits of indi- 
vidual borers, Usually however, the newly hatched borers feed for 
a short period upon the surface of the plant, near their place of 
hatching, particularly upon the tender leaf blades (Fig. 2), or upon 
the green silk and husk of partially developed ears. 
16 Leontodon spp. 20 Plantago spp. 
7 Radicula armoracea. *1 Secale cereale. 
18 Lactuca sativa. 22 Poa pratensis. 
19 Oxalis spp. 
