—6— 



unlike the scale of y^, ohsairus Comst. in general appearance; 

 diameter i to 1.25 mm., subovate, about 1-7 longer than 

 wide; exuviae rather large, sub-marginal, appearing dark 

 brown when on host, yellowish orange under microscope 

 when detached from insect; ventral scale a mere white film. 

 Male scale longer and narrower; same color as female scale; 

 exuviae near cephalic end. 



Median lobes ultimate ventral segment of female well 

 developed, long, narrow, apex rounded, notched on outer 

 side, broadened below notch to base; rudiment of second 

 lobe with margin slightly doubly concave, the degree varying 

 in different individuals; margin of third lobe rudiment even; 

 a notch in margin a short distance laterad of second incision, 

 a marked concavity of the margin still laterad of this and 

 separated from it by a convexity; margin laterad of this 

 markedly serrate. Median incision not reaching to base of 

 lobes; second and third incisions comparatively deep and 

 narrow; two cavities in body wall, adjoining anal margin, one 

 just mesad of marginal notch, the other mesad of marked 

 concavity, with slightly thickened margins which in weak 

 light make them appear as incisions. A large ovate chitin- 

 ous process at inner base of median lobe; chitinous processes of 

 second incision about equal; processes of third incision about 

 uniform in thickness and smaller than those of second in- 

 cision. A pair of spines from the outer base of median lobe, 

 a pair of spines from rudiment of second lobe, a pair from 

 third, one small spine from each of cavities near margin, 

 sometimes one or two more along margin, and usually a spine 

 from lateral edges of each penultimate and antepenultimate 

 segments. Ventral grouped glands: cephalolaterals, five to 

 seven; caudolaterals. three or four, medians usually none, but 

 sometimes two. 



The position of the notches and concavities of the anal 



