MAINE AGRICULTURAL EXPERIMENT STATION. 1909. 



those on II of 3 and those of III-VI of 2 each, a very small 

 group of lateral pores occur on segments II-IX (merged to a 

 caudal group on IX), and about half way between the median 

 group and lateral margin an additional group of about 3 pores 

 occurs on segments I and II. The smallness of these incon- 

 spicuous groups is correlated aptly with the fact that this is 

 not a flocculent species, the wax secretions not exceeding the 

 pulverulent condition. Fig. 117 shows a pupa a short time 

 before the final molt. 



Winged Oviparous Form. Fig. 115. The freshly molted indi- 

 viduals, August 19, 1909, have a golden brown body, the thorax, 

 except the dorsal lobes, slightly lighter than abdomen, lobes 

 of thorax dark, head dark, wings with whole stigmal area and 

 margin a decided and conspicuous green, the remainder of the 

 wing being white with a slight yellowish green tint. As the 

 individual ages the coloring becomes darker, though the wings 

 retain their characteristic green color. Length of body 1.7 to 

 2 mm., wing expanse 6. mm. 



The areas of the wax pores (Fig. 115) are much as in the pupa 

 except for the abdomen which is as follows: I with median 

 groups comparatively large and merged, II median groups sep- 

 arated and composed of 2 pores each, V with two small groups 

 between median ones referred to. I-VIII with distinct lateral 

 groups on darkened area, III-VI with small groups of 2 or 3 

 pores each midway between median and lateral groups. 



The wing veins of this species have, as with the other five 

 discussed in this paper, a fairly constant characteristic trend 

 which is shown in Fig. 115. First A of the fore wing is seen 

 to be considerably arched. 



The sensorium of each of antennal joints III-V is confined 

 to the distal half of the joint and extends not more than half 

 way around the joint. These three joints are much alike in 

 general appearance. Ill is noticeably shorter than IV while 

 IV and V are subequal. The usual group of smaller sensoria 

 occurs on V and there is nothing striking about the 4 or 5 ter- 

 minal hairs. Fig. 116. 



Apterous oviparous form winter female or stem mother. May 

 7, 1906, I observed these young females of the winter genera- 

 tion, minute and slightly downy clinging close to the buds or 

 in the axle of the leaves on Norway spruce. May 31, 1906, 



