38 



SCALE OF FEMALE. Plate 3, Fig, 6. Length, 2 2.5 mm. Dis- 

 tinctly broadened posteriorly, moderately thick, pure white, or, 

 when occurring on the stem and covered with epidermis, dirty white. 

 Exuviae .9 mm. long, pale orange-yellow, often with an indefinite black 

 spot in the middle of the second exuvia. First exuvia overlying the 

 second more than half its length. The second exuvia is very thin and 

 the dark spot in the middle, when present, is due to the dead body 

 of the female showing through. In describing the scale Maskell 

 says, "with a faint pink tinge when the egg-mass beneath shows 

 through." 



FEMALE. Plate 8, Fig. i. Median lobes moderately well devel- 

 oped, set closely together, rounded, entire. Second and third pairs 

 with the inner lobule longer and rounded and the outer lobule smaller 

 and bluntly pointed ; entire. The gland-spines are arranged as fol- 

 lows : i, i, i, i, 3-4. The first gland-spine is nearly as long as the 

 others. Second row of dorsal gland-orifices usually absent but occa- 

 sionally represented by the posterior group consisting of about two 

 orifices. Third row with i 3 orifices in the anterior and 3 5 in 

 the posterior group. Fourth row with i 2 orifices in the anterior 

 and 5 in the posterior group. Median group of drcumgenital glanc, 

 orifices, 7 9; anterior laterals, n 16 ; posterior laterals, 7 2 



SCALE OF MALE. Plate 3, Fig. 6 A. Length, .8 i mm. Par- 

 allel-sided, very distinctly tri-carinate. Exuvia orange-yellow, extend- 

 ing about one-third of the length of the scale. 



REMARKS. 



This species can be distinguished from others in the genus by the 

 small yet distinct lobes and the thinness of the second exuvia. The 

 exuviae resemble those of Phenacaspis cock'erelli Cooley. C. dysoxyli 

 has been taken only in New Zealand where it appears to be abund- 

 ant and injurious. Maskell says of it: " The large white puparia of 

 this insect do much to spoil the appearance of Dysoxylon, one of 

 the most showy-leaved plants in New Zealand." The species is 

 most frequently found on the leaves and often occurs clustered along 

 the midrib. The food plants are Dysoxylon spcctabite. Holier ic^ angus- 

 tifolia and Melicyttis tamifrons. 



\J A 



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