THE OLIVE INSECTS OF CALIFORNIA 



57 



4. The mountain-ash louse, Prociphilus fraxini-dipetalae (Essig) 

 (fig. 10). This species rarely attacks the olive, having been taken by 

 the writer on the tender sprouts at Berkeley, 1914, and on the leaves 

 at Corning, the same year, by Chas. B. Weeks, Horticultural Com- 

 missioner. 



5. The red scale, Chrysomphalus 

 aurantii (Mask.). A citrus pest re- 

 ported on olive in the southern part 

 of the state by Prof. H. J. Quayle. 8 

 It was recently received from Roy K. 

 Bishop, Horticultural Commissioner, 

 who took it on olives in Orange 

 County. The leaves were thickly cov- 

 ered. 



6. The purple scale, Lepidosaphes 

 beckii (Newm.). Also a citrus pest 

 reported on olives in southern Cali- 

 fornia by Prof. H. J. Quayle. 9 



7. The greedy scale, Aspidiotus 

 camellias Sign. (figs. 11 and 12). 

 Very common on the bark of the 

 branches, especially of old suckers. It 

 may be easily mistaken for the ivy or 

 oleander scale, the color being much 

 the same, but the outside shell is more 

 robust, nearly conical in shape and 

 with the small exuvia or nipple at one 

 side rather than at the middle. The 

 characters of the anal plate, as shown 

 under the microscope (fig. 12) at once 

 separate it from the ivy or oleander 



scale (fig. 6). Though often abundant, it does not seem to hurt the 

 infested portions in any noticeable way. 



8. The omnivorous looper, Sabulodes caberata Guen. The cater- 

 pillars of this moth occasionally feed upon the leaves of the olive 

 trees at Berkeley. 



9. The larvae of a moth (Pyralid?) have been taken a number of 

 times from the knots on the olive limbs produced by the bacteria, 

 Bacterium savastanoi Smith, by Prof. "W. T. Home and Prof. 

 Elmore Chase at Fairoaks. The soft spongy tissues as well as the 



Fig. 10. Apterous females and 



young of the mountain ash louse, 



Prociphilus fraxini-dipetalae 



(Essig), on olive. (Original.) 



s Bull. 222, Cal. Agr. Exp. Sta., p. 106, 1911. 

 Bull. 226, Cal. Agr. Exp. Sta., p. 325, 1912. 



