19G 



THE MONTHLY BULLETIN. 



Diciyospcrnuim album, EnjUirina indica, sago palm {Cycas sp.), 

 Latania sp., palms, mango, crotoii rose, Pandanus graminifolius, Areca 

 iriandra, Cypripcndium sp., Dendrobium sp., Anthurium sp., Aloe 

 zeyheri, tea,^^ india rubber (Ficus sp.).^* Both AVoglurn^^ and Quayle^*' 

 report this insect as a serious enemy of citrus trees in Spain, Italy and 

 Sicily. It attacks mainly the leaves and fruit, but is also found on the 

 twigs. This aspect of the insect is a serious one for California and one 

 Miat sliould increase our vigilance in keeping it from gaining a foothold. 



Fig. 68. — The dictyospermum scale, Chrysomphalus dic- 

 tyospermi (Morgan) on kentia palm leaf received' from 

 A. A. Brock, Ventura, California. Enlarged slightly. 

 (Original. Photo by Dept. of Sci. lUust., Univ. of Cal.) 



Control measures have never been resorted to in this State, except 

 to completely destroy infested plants, and this is tlie sure means of pre- 

 venting it from becoming established. If the insect does become an 

 orchard pest, it will probably be necessary to resort to the same methods 

 as used for the red scale, Chrysomphahis aurantii (Mask.), which is a 

 very close relative. 



'^Fernald, Mrs. M. E.. Cat. Coccidse, p. 290, 1903. 



'*Herrick, Prof. G. W., Tech. Bui. No. 2, Mis.s. Agrcl. Exp. Sta., p. 11, Feb., 1911. 

 "^Woglum, R. S., Bui. No. 120, Bur. Ent.. U. S. Dept. Agric. pp. 49, 50, Feb. 28, 1913. 

 'OQuavle, Prof. H. J., Bui. No. 134 (Prof. Paper), U. S. Dept. Agric, pp. 15-17, 

 Oct. 7, 1914. 



