122 



THE MONTHLY BULLETIN. 



Life History. — The young insects are yellow and soon settle to pro- 

 duce the scales of the male and female. So thick are they that plants 

 and entire hedges are ruined by the sapping of the females, while 

 the srnie may appear to be covered with fine flakes of snow due to the 

 great numbers of minute white scales of the males. The insects attack 

 all parts of the host and are very destructive. 



Fig. 105. — The euonymus scale, Chionaspis 

 euonymi Comst. (After Sanders.) 



Distribution. — In greenhouses and taken in cjuarantine. 



Food Plants. — Euonymus latifoUus, E. japonicus, E. eiiropceus, E. 

 afro pur pur ens, Celastrus scandens, orange. 



Control. — Spray with kerosene or distillate emulsion or resin wash 

 every two weeks between the months of May and June or until the 

 scale has disappeared. The spraying should be done during the hatch- 

 ing period. Care should be taken to see that the sprays are not strong 

 enough to injure the foliage. 



In the winter when the plants are dormant much stronger solutions 

 of the same sprays may be used Math lasting effects. 



THE SCURFY SCALE. 



Chionaspis furfura (Fitch). 

 (Fig. 106.) 



General Appearance.— The female scale is irregular and broadly 

 pear-shaped; from white to light gray in color. The exuvias is yellow- 

 ish and from one eighth to one tenth of an inch in length. The male 

 scale is white, very small, long, tricarinated and with yellow exuviae at 

 the pointed end. 



Life History. — The winter is passed by the females under the scales 

 where the purple or wine-colored eggs are laid and hatch in the spring 

 shortly after blooming time. The young begin at once to cover their 

 bodies with a scale. 



This insect is sometimes confused with the oyster shell scale, but is 

 broader and much lighter in color, having dark red eggs, while those 

 of the oyster shell scale are yellowish-Avhite. 



