ECONOMIC ENTOMOLOGY. 35 



deposit their eggs in patches of 20 or more on the under 

 side of the leaves of the grape. The larvae soon hatch and 

 feed in flocks on the back of the leaves. 



" While young, the little caterpillars eat only the soft 



Fig. 34. Larva of American Procris. 



tissues of the leaves, leaving the fine net-work of veins un- 

 touched, but as they grow older they devour all but the 

 larger veins." (Saunders.) They mature in August, and 

 pupate in a crevice in the bark. In a fortnight the moths 

 emerge, and a second brood of larva soon follows. The 

 majority of these remain through the winter as chrysalids. 

 Remedies. Spray the vines thoroughly with Paris 

 green and water (one-half teaspoonful of Paris green to a 

 gallon of water). A parasitic fly destroys the larvse. 



THE IMPORTED CURRANT BORER. 



{^Egeria tipuliformis. Linn.) 



The imago is a pretty, wasp-like moth, measuring about 

 three-quarters of an inch across the expanded wings. The 

 body is bluish black, with three yellow bands across the 



Fig, 35. Fi 



Imported Currant Borer and Moth. 



