194 THE CANADIAN ENTOMOLOGIST 



spur, .22 ; total length, 1.172. Length of wing, 4 mm.j width, 1.5 nim.j 

 total expansion, 8.75 mm. Length of cauda, .22 mm. Body, antennae 

 and legs bearing long hairs. 



Fall migrafits not obtained. 



Oviparous female. — Collected at Corvallis, in colonies on under 

 side of small twigs. Egg deposition takes place on the needles and they 

 are laid in a row, about five being the most found on any one needle. 



General colour brown, with white powdery wax on dorsal and ventral 

 parts of body. That on the ventral part is thicker than above and extends 

 half way up the sides. The characteristic rows of spots as are found on 

 all the apterous forms of this species are found on the dorsum. This form 

 is smaller than the viviparous forms. 



Measurements: Length of body, 2.8 mm.; width, 1.7 mm. Length 

 of antennâl segments, I, .066 ; II, .09 ; III, .33 ; IV, .176 ; V, .198 ; VI 

 and spur, .176 mm. ; total length, 1.036 mm. 



Alate male. — Collected near Corvallis, Nov. 3, 1911, on same tree 

 that the spring forms were collected on. Only a very few specimens 

 found and these were so active and so small as to be not readily located. 



General colour of body, green. Head and thorax dusky. Antennas 

 and legs dusky. Body almost hid in white, fluffy threads of wax which 

 also appears on the legs. Head almost as wide as thorax. Antennae 

 reaching to abdomen and with small circular, raised sensoria on the third, 

 fourth and fifth segments. From top view there are shown about sixteen 

 on the third segment, eight on each side ; the fourth has about seven to 

 nine, and the fifth has none in one specimen and apparently three in 

 another. The wings are large in proportion to the body and the veins are 

 but lines, the median veins almost obsolete. Nectaries cone-shaped with 

 flanged opening and placed on the side of the body. Cauda more distinct 

 than in other forms and broadly angular. 



Measurements : Length of body, 2 mm.; width, .78 mm. Length of 

 antennal segments, I, .066; II, .066; III, .^^Ti] IV, .154; V, .154; spur, 

 .176 mm. Total length, .946 mm. 



Egg. — Size not ascertained but they are covered with a powdery-like 

 substance and resemble the eggs of Loiigistigma caryce Harris. 



Originally described by VV. M. Davidson, Journal of Economic 

 Entomology, Vol II, p. 300, 1909. 



