172 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



caterpillars, which is there the most destructive brood on field- 

 corn and sugar-corn, frequently causing a loss of from 10 to 50 



FIG. 148. Tip of ear of corn showing eggs of corn ear-worm on silks. (After 

 Quaintance and Brues, U. S. Dept. Agr.) 



per cent of the latter crop. The caterpillars become full grown 

 during the latter part of September and change to pupae, which 

 hibernate over winter as already described. 



