120 



sent out b}' the nurseryman, but should be unhesitating-ly de- 

 stroyed. 



The Grape Scale. 



{Aspidiolns //zur.) 



This is an occasional pest, rarely injuring- the grape seriously, 

 '^^^ • but appearing now and then in a vineyard 



in a way to call for effective treatment. It 

 infests especially the lower part of the vine, 

 '/ ' from the g-round to the second 



I ^ year's growth, and accumulates 



f' '.^ in crevices and under loose 



•\4f ' pieces of bark. When abun- 



dant it comes to cover the sur- 

 Fig. 10. The Grape face with a continuous crust 

 Scalk; female scale resembling a coat of white- 

 °" '" ■ wash, and in that case it weak- 



ens the vine and may cause its death. (Fig. 10 

 and 11.) 



The female scale is flat and nearly circular, 

 about a fifteenth of an inch in length, pale yellow- 

 ish brown or dingy white. When a scale has been 

 removed a conspicuous white speck upon the bark 

 marks its former position. As it winters in the 

 eg"g" this species cannot be destroyed by fumig-ation, 

 but may best be treated, where treatment is neces- 

 sary, with kerosene emulsion or whale-oil soap. Fig. ii. The 

 The eggs begin to hatch about the middle of May, Grape Scale, 

 and an insecticide spray may be applied to advan- 

 tag"e late in that month or early in June. 



natural size. 



The Rose Scale, ok Raspberry Scale. 

 ( . 1 N/ac(is/>/s fosip. ) 



The rose scale (Fig-. 12) is not by any means limited to the rose 

 but thrives equally well on a considerable number of rosaceous 

 plants, including especially the raspberry and the blackberry, of 

 which it is the common scale. 



It is circular, snowy white, and very readily recognized by the 

 striking contrast between its color and the green or reddish brown 

 of the twig-s and branches on which it grows. It is often sent to 

 my office by raspberry-g-rowers, and has occasionally been reported 

 by my nursery inspectors as occurring on raspberry and blackberry 

 plants in the nursery. It is not often a serious pest, especially if 



