THE MONTHLY BULLETIN. 121 



are often grouped so thickly as to almost hide the females and make the 

 branches appear white. 



Life History. — Practically the same as that of C. cuonymi. 



Fig. 104. — The orange chionaspis, Chionaspis citri 

 Comst. (Orig-inal. ) 



Distribution. — Though this scale has often been taken in quarantine, 

 it has become established only in San Diego County, and there to a 

 very slight degree. 



Food Plants. — Its favorite food plant is the orange, though other 

 species of citrus trees are attacked as well as holly (Osmantkus ilici- 

 foJius), palms and Euonymus sps. 



Control. — Fumigation as for red or purple scales will easily control 

 this pest. 



THE EUONYMUS SCALE. 



Chionaspis euotujmi Comstock. 



(Fig. 105.) 



General Appearance. — The female scale is dirty brown with yellow 

 exuviee, convex and broader posteriorly. The scale of the male is snow- 

 white, long and narrow, slightly shorter than the diameter of the 

 female scale, which is from 1.75 to 2 mm. and strongly tricarinated. 



