The European Corn Borer. 19 
parts resulted. Very little commercial injury. Less than 1 per cent 
of the pods were infested in any of the fields under observation. 
(Fig. 15.) 
SPINACH. 
A few egg clusters have been found on the leaves each year. Less 
than 1 per cent of the plants were infested in any case and no ap- 
preciable loss resulted. 
PEPPERS. 
Injury to both stalks and fruit of “sweet” and “hot” varieties. 
Injury to stalks in some cases caused a reduction in yield, since stalks 
Fic, 14.—Stalk of celery injured by the European corn borer. Side of stalk cut away to 
show borer witbin. (One-half natural size.) 
were broken over before fruit had fully developed. Some fruit was 
unfit for sale. Estimated loss in worst infested commercial gardens 
was 5 per cent of value of crop. 
DAHLIAS. 
Most susceptible of flower crops. Borers tunneled extensively in 
stalks. Injury resulted in the breaking over and wilting of plant 
before flowers had attained full development. No infestation in 
