Pomona College Journal op Entomology 711 



as long as wide, rounded at apex, opposite sides nearly parallel, dusky witii basal 

 half much darker than the upper portion, hairy on lower border; stigmal vein 

 arising near the tip of the stigma, evenly curved througliout its entire length, but 

 not deeply curved ; first and second discoidals arising near the middle of the sub- 

 costal, bases close together; first discoidal nearly straight; second discoidal nearly 

 twice as long as the first and curving inwardly ; third discoidal obsolete for a 

 considerable part of tlie base, curving slightly towards the upper wing margin, 

 running nearly parallel to the main axis of the wing. All veins dusky. Second- 

 ary — Length 2.1 mm., widtli 0.6 mm. Subcostal vein witii sliarp downward bend 

 one-tliird its distance at the base of the discoidals and a more gradual downward 

 bend two-thirds its distance from the base to the tip. Discoidals arising from the 

 first bend with their bases close together. First discoidal short, curves toward 

 the wing tip, with little slant; second discoidal with a sharp slant towards the 

 apical lower wing margin, straight, considerably longer than the first vein ; veins 

 dusky. Cauda — Obsolete. 



Nymphs — The winged viviparous females as well as the stem motiiers op 

 apterous viviparous females were giving rise to great numbers of the young of 

 the winged females, there being none of the apterous young produced in this way 

 within the galls. These nymphs vary from almost transparent white or yellowish 

 to a dusky green color with amber or pinkisli thoraxes. Legs dull yellowish or 

 whitish with dusky articulations. Rostrum light with dark tip and extending just 

 be3'ond posterior base of tiie first coxa and not quite to the second cox*. The 

 bodies are early covered with a fine white powder which gives them a grayish or 

 whitisli appearance. 



APTEROUS VIVIPAROUS FEMALE OR STEM-MOTHER (Figure 227 B) 



Length 2.5 mm., width 2.2 mm. Nearly globular in shape, though the body 

 is distinctly flattened. Prevailing color dull brown or green with wliite patches 

 of flocculence distributed as shown in the drawing. Head — Black, entirely cov- 

 ered with white flocculence excepting the anterior tip, very small. Eyes — Simple 

 and located in jjosition of compound eyes. Antennae — (Figure 227 D). Four 

 articled, short, reaching to base of mesothorax; article I dull blackish, II dusky 

 green, III and IV dull green or brown. The lengtlis of the articles are as 

 follows: I, 0.0(i mm.; II, 0.07 mm.; Ill, O.lO mm.; IV, 0.12 mm.; total 0.41 mm. 

 Rostrum — Dull green or brown with dusky tip and base, reaching to the second 

 coxae. Thoracic segments well developed and extending much higher than the 

 head. Prothorax — Almost entirely covered with white flocculence. Mesothorax — 

 With two marginal and two dorsal white patches. Metathorax — With two mar- 

 ginal and four dorsal patches. Abdomen — Two marginal (one on each margin) 

 of every bodj' segment and four longitudinal rows of dorsal patches. At the 

 posterior end of the abdomen are two large marginal patches which nearly cover 

 up the last segments and in front of these patches are but two dorsal patches 

 instead of the usual four on the abdominal segments, body color dull green or 

 brown. Ventral surface covered witii fine powder. Legs — Short, dusky through- 

 out, hairy. Style — Obsolete. 



