ECONOMIC ENTOMOLOGY. 53 



They pupate in cells in the ground. There are two or 

 three yearly broods. 



Remedies. The cheapest and most effectual remedy 

 is to cover the plants with boxes, open at the bottom and 

 covered with netting. 



Sprinkling the plants early in the day with a mixture 

 of two parts of Paris green and eight parts of flour is 

 recommended. 



THE GRAPE-VINE FLEA-BEETLE. 



(Graptodera chalybea. Illig.) 



Hibernates in the adult state. Comes forth early in the 

 spring and feeds on the buds as soon as they commence 

 swelling. 



In three or four weeks it deposits its eggs in little clusters 

 on the under sides of the leaves. The eggs are yellowish in 

 color, and " in a few days produce colonies of small, dark- 

 brown larvae, which feed on the upper side of the leaves, 

 riddling them; and when numerous they devour the whole 



Pig. 58. Fig- 59. 



Grape-vine Plea-beetle and Larva. 



leaf except the larger veins, and sometimes entirely strip 

 the vines of foliage." 



In about a month the larvse mature, " when it is a little 

 more than three-tenths of an inch long, usually of a light 

 brown color, sometimes dark, and occasionally paler and 



