446 



FRUIT INSECTS 



Fig. 386. — Grape root-worm, mature grubs (x 5). 



brown antennae. The beetles emerge from the ground the latter 

 part of June and in July and at once begin feeding on the upper 

 surface of the grape leaves, producing chain- 

 like markings, as shown in Figure 382. 

 After feeding for about two weeks, the 

 fomale deposits her first batch of eggs be- 

 neath the loose bark on the old canes and 

 trunk of the vine (Figs. 384 and 385). 

 Other batches are laid at intervals of about 

 four days, each female ovipositing on an 

 Fig. 387. — Pupa of average four or five times. The total num- 



the grape root-worm. '^ 



ber of eggs laid by each female averages 

 over 100. The egg is about 2t i^^ch in length and about one third 

 as wide as long, cylindrical in form, with rounded ends, and is 

 yellowish-white in color. The eggs are laid in loose, flattened 



