21 
same branch. It winters in the egg stage. The young hatch in May; 
the males issue in the summer. There is but one brood a year. It is 
practically confined to the grape, but has been found on a few other 
plants, and may spread to fruit trees. 
7 
Fig. 10.—Aspidiotus rapax. Seales on twigs, and enlarged. (Howard.) 
THE PEACH SCALE. 
(Diaspis pentagona Targ. Tozz.—fig. 11.) 
The peach scale, sometimes known as the ** whitewash scale,” is of a 
grayish white color, rather flat and irregularly circular or slightly 
Fig. 11.—Diaspis pentagona: a, infested branch; b, female; ¢, male; d, group of males. (Howard.) 
. . ul = Ve <0 ry. + 
ovate in outline, never as elongate as the scurfy bark-louse. he 
exuvium is often a little way from the margin, and is yellowish or 
