18 SCALE INSECTS. 



Mature Male. The general color is orange with a faint duski- 

 ness on the prothorax. The head is somewhat darker than the rest 

 of the body. The eyes are dark purple — almost black. The an- 

 tennie are yellow, somewhat obscure or smoky. The legs and style 

 are dusky, the latter paler than the former. The thoracic shield is 

 regularly ovoid, compressed anteriorly, dusky in color, with margin 

 brown, more distinctly so anteriorly: transverse band narrow, brown. 

 Antenna' 10-jointed, two basal joints shortest, second nearly globu- 

 lar, inserted in the first ; joints 4 and 5 sube(iual, longer than the 

 others : joint G next in length, and joints .3, 7, and 9 shorter and sub- 

 equal ; joint 10 still shorter, conical. Antenna? somewhat hairy and 

 nearly as long as the body of the insect. Wings faintly dusky, iri- 

 descent with yellow and green. Length of body about 0.6mm (-f|g^ 

 in.); style, 0.25mm (^^^^^ in.) 



Female, Third Stage. After the second molt the females still 

 appear pale yellow as before, with various larger and smaller trans- 

 parent spots around the border of the body. The form is nearly 

 circular, with greatest diameter averaging 0.56 mm (^ga^ Jq j j;>\^q 

 sucking bristles are very prominent and long three times the length 

 of the insect. The last segment in this stage has practically the 

 characters of the mature female, as follows : There are two pairs of 

 lobes, the terminal one largest and nearly three times as broad as the 

 other lobes. The terminal lobes are rounded at the apex and are 

 distinctly notched near the middle of the external edge. The second 

 pair of lobes is smaller and narrower and is also notched externally. 

 Between the first and second lobes on either side is a small spine and 

 two or three such spines are just back of the second lobe, while back 

 of these are three stout teeth, curving anteriorly. A still smaller 

 blunt tooth sometimes occurs near the middle of the lateral margin. 

 The segmentation of the body at this stage is quite distinct. 



Mature Female. After reaching maturity the embryonic young 

 are at first not visible, but later the body becomes filled with them. 

 The mature female measures 0.8mm ( jgj^ in.) wide by about 1mm 

 (yMoinOlong. 



In report of United States department of agriculture, Comstock 

 first describes the female as follows : « 



" The body of the female is yellowish and almost circular in out- 

 line ; the segmentation is distinct, though not conspicuous. The last 

 segment presents the following characters : 



" There are only two pairs of lobes visible ; the first pair converge 

 at tip, are notched' about midway their length on the lateral margin, 

 and often bear a slight notch on the mesal margin near the tip. The 

 eecond pair are notched once on the lateral margin. 



"The margin of the ventral surface of the segment is deeply in- 

 cised twice on each side of the meson ; once between the bases of 

 the first and second lobes and again laterad of the second lobe. On 



• Kept. U. S. Dept. Agr., 1880, p. 304. 



