35 



CHIONASPIS STANOTOPHRI n. sp. 



SCALE OF FEMALE. Plate 3, Fig. 7. Length, 2.2 2.6 mm. 

 Moderately elongated, distinctly convex, firm in texture, clear white 

 in color. Exuviae .8 mm. long ; lemon-yellow or orange-yellow in 

 color. 



FEMALE. Plate 8, Fig. 9. Three pairs of lobes are present. 

 Median pair rounded, divergent, striate, entire ; separated at their 

 bases by a distance nearly equal to the width of one of the lobes. 

 Lobules of the second pair rounded, entire, striate. Third pair 

 varying in degree of development ; composed of two broad, short, 

 striate, entire lobules. The lobes are very slightly, if at all, darker 

 than the remainder of the pygidium. In general appearance the 

 median lobes resemble those of pinifoliae but they are further apart. 

 The gland-spines are arranged as follows: 1-2, 1-2, 1-2,3. There 

 are four distinct spines at the base of each of the median lobes, 

 two above and two below. Second row of dorsal gland-orifices repre- 

 sented by the anterior group consisting of i 4 orifices. Third row 

 with 4 orifices in the anterior and 5 6 in the posterior group. 

 Fourth row with 4 orifices in the anterior and 5 6 in the posterior 

 group. Median group of circumgenital gland-orifices, 7 12; anterior 

 laterals, 18 24; posterior laterals, 15 17. 



SCALE OF MALE. Plate 3, Fig. 7 A. Length, i 1.2 mm.: dis- 

 tinctly tri-carinate. Exuvia lemon-yellow or brownish, occupying 

 scarcely one-third the length of the scale. 



REMARKS. 



On Buffalo grass, Stanotophrum glabrum, at Cape Town, South 

 Africa. Collected and sent to me by Mr. C. P. Lounsbury to whom 

 I am deeply indebted not only for this, but also for many other 

 species of scale insects. 



The appearance of the scales on the inside of the blades of grass 

 where they are exclusively found might lead one to mistake this 

 species for Chionaspis spartinae Comst. There is no perceptible 

 ventral scale, however, in this species, while there is a very distinct 

 one in spartinae. There are also important differences in the 

 pygidia of the two insects. 



