70 CALIFORNIA STATE COMMISSION OF HORTICin.TI'RE. 



Scale of Male. — Long and narrow, lateral margins prominent, not 

 carinated, light gray with terminal exuviae darker. 



Female. — Three pairs of well-developed lobes, nearly equal in size, 

 broadest near the middle, tapering anteriorly, notched deeply on each 

 side of the apex. A rudimentary fourth lobe, produced into a papilla, 

 halfway between third and penultimate segment. A crescent-shaped 

 thickening of the body wall appears between the 

 median lobes, between median and second, second 

 and third, and two thickenings between third and 

 fourth lobes and penultimate segment. The plates 

 are as long as the lobes, and fringed on the distal 

 CL margins; two between median lobes, two between 



'''''■ T- .r^'fV'' ri' median and second, three between second and third, 



gandn (Chaff Scale). ' ' 



a, female, much en- three between third and fourth, and three pal- 

 eniarged''' "'''^^' ^^'"^ ™^^® P^^^^^ cephalad of fourth lobe. On the three 

 segments preceding the last are five or six plates, 

 each produced into a papilla. A spine on the dorsal surface of each 

 lobe near the margin; on the ventral surface the spines are situated 

 laterad of the second, third, and fourth lobes respectively. Four groups 

 of circumgenital gland-orifices, each of about 7, but varying from 5 to 10. 



On orange. (On palms in greenhouse.) 



This is a very difficult scale to detect on the orange, being so near the 

 same color as the bark. In California this scale has not gained a foot- 

 hold, being known in the open in only two districts. The author once 

 found in a new section thirteen trees that were badly infested, and the 

 entire infestation was on the trunk and lower branches up to the main 

 fork of the tree. This scale seems to prefer the lower branches and 

 trunk and requires close inspection to detect its presence. 



