160 INSECT PESTS OF JERRIES AND GRAPES 



Submersion of the roots in water, if the latter is available, is 

 effective. It is suggested that, where possible, an affected vineyard 

 be flooded with six inches of water for from seven to ten days, as 

 soon as the vines cease growing in the fall. Infested vines are 

 benefited also by two days' flooding in midsummer, but are injured 

 by any more. Vines on sandy soil are rarely injured by this pest. 



The Light-loving Anomala. Beetles of this group (Anomala 

 lucicola Fab.) attack leaves of grape and of Virginia creeper. They 

 are yellowish or brown beetles about one-third of an inch long. 

 There is considerable variation in color and markings of the adult. 

 The larval stage is spent in the ground as a white grub, feeding 

 on various roots. Another somewhat larger form, A. marginata, 



FIG. 177. The yellow-bear caterpillar, moth, and pupa. (After Riley.) 



occurs in some sections. These beetles frequently destroy the 

 leaves of the grape. 



Control. Spray with arsenate of lead, four pounds to fifty 

 gallons of water, when there is no fruit on the vines. 



The Yellow-bear Caterpillar. The adult moth of this species 

 (Diacrisia virginica Fab.) is often called "the white miller." It 

 is of a white color, marked with a few dots. The expanse of wing 

 is about one and three-fourth inches. 



Description and Life History. There are two generations the 

 second brood of caterpillars appearing in late summer or early 

 fall. When full grown, these striking caterpillars are two inches 

 long, generally yellowish, but the colors vary from yellow to brown 

 in the same brood (Fig. 177). 



The female places her round, yellow eggs in clusters on the 



