l66 MAINE AGRICIJI^TUR.\L EXPERIMENT STATION. I912. 



0.075 mm; III, 0.39 mm; IV, 0.16 mm; V, 0.2 mm; VI, 0.16 

 mm. Ill with about 4 sensoria in a row ; IV with distal sen- 

 sorium; V with i sensorium besides the usual distal one. (Fig. 

 280). Wings as shown in (Figs. 308 and 309). Legs hirsute. 

 Tarsus with ist joint not elongate, the longest dimension being 

 0.075 mm and 2nd joint exclusive of claw 0.36 mm. (Fig. 281). 

 Abdomen hirsute, light brown, — paler than head and thorax. 

 Cornicles tuberculate dark brown with varnished appearance. 

 Body of recently molted individual is very densely flocculent 

 being covered with white "wool" from head to tip of abdomen. 

 The costal edge of the deflexed- wings part this white substance 

 on the abdomen so that there is a mid dorsal row of wool and 

 two lateral rows, giving the body a three striped appearance. 

 The flocculent matter rubs off from the older individuals so that 

 they appear merely pulverulent. These were found on tender 

 new growth of twig of Picea abies thickly packed among the 

 new needles. This alate form was taken June 20, 1910; June 

 28, 1909; and July 12, 1906. The ptipa. is pulverulent and pale 

 brown like the abdomen of the winged viviparous females. 

 Cornicles darker than rest of abdomen. On dorsal abdomen 6 

 double rows of dark dots, (i. e. the wax pore plates), the 5tM 

 row being on a line with the cornicles. 



Fig. 281 L. hyalim.s. 

 viviparous female. 



Tarsus of alate 



Fig. 282. L. hyalinus. 

 Abdomen of apterous vivi- 

 parous female, with wax- 

 pore plates indicated. 



Apterous viviparous female. Head and prothorax and abd'o- 

 men medium brown, thorax and abdomen paler brown. Legs, 

 ar.tennse and entire body hirsute. Abdomen pulverulent, and 

 with longitudinal row of 2 black spots per segment on each 



