62 CALIFORNIA STATE COMMISSION OF HORTICULTURE. 



with 6 to 8 orifices. A large number of conspicuous tubular spinnerets, 

 varying from the filiform to the trumpet-shaped type, some opening by 

 inconspicuous dorsal pores in two series on each side, others opening on 

 to the margin near the extremities. Anal aperture small, close to 

 extremity; genital aperture between the upper and lower groups of 

 glands. Length, .8 to 1 mm. 



Adult Male. Orange yellow in color, with dark brown conspicuous 

 transverse band crossing the thorax in front of the scutellum. 



Eggs and young larvae yellow. 

 On palms (in greenhouses). 



Chrysomphalus aurantii Mask. 

 (Red Scale of California.) 



Female. The female is light yellow in color in the adolescent stages, 

 becoming brownish as it reaches maturity. When fully developed the 

 thorax extends backward in a large rounded lobe on each side, project- 

 ing beyond the extremity of the abdomen, and giving the body a 

 reniform shape. The last abdominal segment presents the following 

 characters: Three pairs of well-developed lobes, the first pair abruptly 

 narrowed at about half their length; the notch on the mesal margin is 

 often nearer the distal end of the lobe than that of the lateral margin. 

 The lobes of the second and third pair are abruptly narrowed at half 

 their length on the lateral margin, and often bear a notch on the 

 median margin near the distal end. Laterad of the most lateral plate 

 is a triangular lobe on the margin of the segment, which is separate. 



The plates are deeply fringed; those between the first pair of lobes on 

 their distal margins, the others on their lateral margins. They are all 

 well developed, exceeding the lobes in length, and are situated as fol- 

 lows: Two between the first pair of lobes, two between the first and 

 second lobes of each side, two between the second and third lobes, and 

 three between the third lobe and the lobe on the margin of the body. 

 The first plate laterad of the second lobe and the three plates laterad 

 of the third lobe are each deeply bifurcated, and each bifurcation is 

 fringed on the lateral margin. 



On the ventral surface there is a spine near the base of the lateral 

 margin of each of the four lobes except the first; there are also about 

 three small slender spines on the margin of the body near the penulti- 

 mate segment. On the dorsal surface there is a spine with each lobe. 

 The first spine is very slender and inconspicuous, but as long as the 

 lobe; it is situated at the base of the lateral margin of the lobe in such 



