THE MONTHLY BULLETIN. 



117 



THE HEMISPHERICAL SCALE. 



Saissetia hemisphwrica (Targ. )• 

 (Fig. 101.) 



General Appearance. — This species is not quite as large as the black 

 scale. Regular and oval in shape with polished surface and rich brown 

 color without markings. 



Life History. — The eggs are very minute and vary from pearly-white 

 to cream color. The life history is practically tlje same as that of 

 Saissetia olece. On citrus trees the scales are often found around the 

 margins of the leaves, but on other plants the stems and foliage are 

 attacked. Not a serious pest. 



Fig. 101. — Hemispherical scale, Saissetia hemispharica (Targ.), 

 on bignonia. (Essig, P. C. Jr. Ent.) 



Distribution. — A general greenhouse scale throughout the State. 

 In Southern California it is quite common, especially in parks and 

 ornamental gardens. 



Food Plants. — Citrus, palm, orchid, camellia, guava, chrysanthe- 

 mum, asparagus fern, bignonia, oleander, peach, sago palm, Zamia sp., 



