INSECTS INJURIOUS TO CITRUS GROVES. 5Q3 



note that the Eed Scale of Florida has not gained a foot- 

 hold in California. 



The female scales of Aspidiotus aurantii are light 

 grey in color, but the brown body of the insect showing 

 through it gives a reddish brown cast. The male scale 

 is one-fourth as large as that of the female, and the pos- 

 terior end is a projecting flap. 



Like its close relative, the Aspidiotus ficus, it infests 

 the trunk, branches, leaves and fruit. It has proved to 

 be a very troublesome pest in California and since no 

 predaceous enemies have been secured to control it, the 

 grower must rely upon his own efforts. 



Remedies: Fumigation, spraying with formula (7), 

 (8 or 9). 



Chaff Scale. (Parlatoria pergandii Comstock). The 

 female scale of this species is 1.4 to 1.6 mm. long. It 

 is thin, light straw colored and more or less circular in 

 outline. The body of the insect showing through the 

 scale, imparts to it a somewhat greenish cast. Several 

 faintly marked ridges, radiating from the point of origin 

 of the scale are to be found. The male scale is smaller 

 than the female, being 1 mm. in length. It is thin, white 

 and almost oblong in outline, the sides being nearly 

 parallel. 



This scale is found most commonly on the trunk and 

 larger branches of citrus trees, spreading to the fruit and 

 leaves only when it becomes very abundant. Frequently 

 its presence is overlooked, owing to its resembling the 

 bark in color and the trees frequently suffer severely 

 before the grower finds out where the trouble lies. 



Remedies: Same as for Purple Scale. 



Remedies : Same as for Purple Scale. 



The Orange Snow Scale or Orange Chionaspis, 

 (Chionaspis citri Comstock). The female scale 



