110 



THE MONTHLY BULLETIN. 



tlio laro-e egg-sac white. The entire length, including egg-sac, is nearly 

 one half inch. 



Distribution. — The distribution of this scale is exceedingly limited, 

 being so far reported only from Los Angeles and Tehama counties. It 

 was collected in Los Angeles County by C. H. Vary and in Tehama 

 County by Chas. B. Weeks. However, it may be met with in any part 

 of the State, especially in the central and southern sections. 



Fig. 91. — The fruit-tree pulvinaria ( Pulvianaria amyg- 

 dali Ckll.). Natural size. (Original.) 



Food Plants. — The specimens taken by Mr. Vary and Mr. "Weeks 

 w^ere feeding upon the foliage of the prune. The scale also attacks 

 peach trees. 



COTTONY MAPLE SCALE. 



Pulvinaria vit is (Linn.). 



(Pulvinaria innumerabilis Rathv. ) 

 (Fig. 92.) 



General Appearance. — This species can be easily 

 recognized in early summer by the large white 

 cottony egg-sacs which are posterior to the brown 

 female bodies. 



Life History. — The eggs are very small, oval, 

 and white to yellow in color. They are deposited 

 in the large, loose, cottony sacs, which are secreted 

 by the females. The young first settle on the leaves 

 and later move to the limbs. The males appear 

 late in the fall to mate and die. In the spring the 

 females increase very rapidly and after egg-laying 

 shrivel and die. There is but one generation a 

 year. 



Distribution. — Not at all extensive and of no 

 economic importance in this State. 



Fig. 92. — The cot- 

 tony maple scale, 

 Pulvinaria vitis 

 a^inn.) (After 

 Comstock. ) 



