PINE SCALE-INSECTS. 807 



spots on five abdominal segments, also along each side, and twelve brownish sub- 

 dorsal round spots ; under surface uniformly pruinose; legs black, excepting tibiae, 

 which are partly yellowish ; beak long, reaching to the last ventral segment, pale in 

 color to near the tip, which is black. (Ashmead Can. Eut., xiii, 67). 



149. The pine-leaf scale insect. 



Chionaspis pinifolice (Fitch). 



(Plate XXXIII ; figs. 2, 2a, 2d.) 



Scale of female.— The scale of the female is snowy white in color, with the exuvise 

 light yellow ; it is usually long and narrow, as represented at Fig. 2 b ; sometimes, 

 however, it is broad, as represented at Fig. 2 c. (Scale from leaf of Finns pallasiana.) 

 The shape of the scale apparently depends on that of the leaf to which it is attached. 

 Thus on the broader-leaved pines the broad scales are more common. Length of scale, 

 about 3™™ (.1 inch). 



Female.— The body of the female is purplish red; the last segment presents the fol- 

 lowing characters: 



The anterior groups of spinnerets consists of from seven to ten ; the anterior later- 

 als of twelve to twenty; and the posterior laterals of fourteen to eighteen. 



The median lohes are somewhat circular in outline, with their distal ends diverging 

 slightly ; there is an arched thickening of the body wall connecting the anterior ends 

 of the lobes. The second and third lobes are each deeply incised ; the mesal lobule 

 is in each case the larger. 



ThQ plates are long, simple, tapering to a point ; there is one laterad of each of the 

 three lobes of each side, and one midway between the third lobe and the penulti- 

 mate segment. There are elongated marginal pores in the following situations : One 

 laterad of each of the first and second plates : one at the base of the mesal lobule of 

 the third lobe ; two between third and fourth plates ; and two between the fourth and 

 the penultimate segment. 



The spines on the ventral surface are so delicate as to be almost invisible ; their 

 bases, however, are easily seen ; they are situated on mesad of the base of each of 

 the first, second, third, and fourth plates. The spines on the dorsal surface are quite 

 long : the first is near the base of the first lobe, the second between the lobules of the 

 second lobe, the third on lateral lobule of third lobe, and the fourth a short distance 

 mesad of the fourth plate. 



Scale of male. — White and carinated, as in other species of this genus, 



Male. — Uniformly orange-red ; eyes black. (Comstock Ag. Rt., 1880.) 



150. Aspidiotusl pini, new species. 



Scale of female. — The scale of the female is much elongated, with its sides paralle 

 and ends rounded. The exuviae are nearly central, and are covered with secretion. 

 The color of the scale is dark gray, often approaching black, with the margin lighter, 

 and sometimes with a bluish, brownish, or purplish tinge. In many specimens of the 

 fully formed scale the part covering the exuviae is more or less distinct, appearing 

 like a small scale with a light margin superimposed upon a larger scale. Length of 

 scale, 2'"™-3™™ (.08-.12 inch); width, .4n'm_imm_ 



Female. — The last segment of the female presents the following characters: 



The spinnerets are more or less elongated, and are arranged in two groups, which 

 occupy the position of anterior laterals in other species. Each group consists of from 

 eleven to sixteen spinnerets. 



The lohes are quite small; the first and second of each side are abruptly narrowed 

 near the distal extremity; the third lobe is notched once or twice. About one-third 

 of the distance from the third lobe to the penultimate segment is a lobe of the lateral 

 margin of the body of about the size of the third lobe. 



