UNIVERSITY OF CALIFORNIA EXPERIMENT STATION 



It attacks citrus and olive trees and is of some importance as pest 

 to the former. 



9. The masked scale, Chrysomphalus personatus (Comst.).' Re- 

 ported by Dr. T. D. A. Cockerell as severely attacking olive trees at 

 Kingston, Jamaica. 13 



10. The black araucaria scale, Chrysomphalus rossi (Mask.). 

 There are many reports to the effect that this scale is a serious olive 

 pest of different parts of Australia. 14 It occurs in California on 

 Araucaria spp., but has shown no tendency to attack the olive here. 



11. The laurel scale, Aonidia lauri (Bouche), is reported as seri- 

 ously attacking olive trees in Chili. 15 



bed 



Fig. 19. The olive fly, Dacus oleae Eossi. a, adult laying eggs in the fruit 

 of the olive; b, maggot; c, puparium; d, olive showing egg puncture, work and 

 exit hole of the maggot. (Eedrawn from Chapelle, Euby and Martelli.) 



12. Glover's scale, Lepidosaphes gloverii (Pack.). Also known as 

 the long scale. Attacks the olive in southern France and northern 

 Africa (Tunis). It occurs in San Diego County, where it sparingly 

 attacks citrus trees, but has never been recorded on olive in this state. 



13. The scale, Parlatoria calianthina Berl. e Leon. Infests the olive 

 in southern Europe. Taken on imported olive trees from Greece in 

 quarantine at San Francisco by inspectors in 1915. 16 



14. The olive white fly, Aleyrodes olivinus Silvestri (fig. 16). The 

 nymphs of this insect occur on the leaves of olive trees in central and 

 southern Italy as well as in Spain, Tunis, and Smyrna. It is not a 

 pest of any serious consequence. 



15. The bark-beetle, Hylesinus oleiperda (Fab.) (fig. 17). This 



is Insect Life, vol. V, p. 121, Nov., 1892. 



i* French, C., Handb. Destr. Ins. Victoria, pt. II, p. 50, 1893, and Despeissis, 

 A., Handb. Hort. and Vit., 2nd ed., p. 576, 1903. 



is Philippi, Dr. E. A., Insect Life, vol. I, p. 154, Nov., 1888. 



16 Maskew, Frederick, Mthly. Bui. Calif. Hort. Com., vol. V, p. 75, 1916. 



