310 THE CANADIAN ENTOMOLOGIST 



subcarinate in front of ocelli. Eyes less than twice as long as their 

 distance from posterior margin of head, slightly protruding, setose. 

 Ocelli approximate, the posterior pair opposite center of eyes. An- 

 tennae about 2.3 times as long as head ; segments 1 and 2 light brown ; 

 3, dark gray, paler in second fifth; 4^ dark gray, pale in basal half; 

 5, pale grayish white, slightly darker apically; 6-8, dark gray. 

 Maxillary palpi two segmented. 



Prothorax twice as wide as long, about equal in length to head 

 and with similar reticulation. Ptero thorax somewhat broader 

 than prothorax, dark brown in color. Wings long, surpassing the 

 abdomen ; fore wing about thirteen times as long as width at middle 

 and with two veins nearly or quite attaining tip; basal vein with 

 four spines, of which the distal is much stouter, black, and situated 

 at the fork (see figure 12) ; anterior vein usually with one spine 

 (rarely two) at base and two near apex of wing, all black, the basal 

 one unusually stout ; posterior vein with five or six equidistant spines 

 at middle, of which three or four are black; fore wings slightly 

 darkened with brown at extreme base, clear white in basal fourth, 

 nearly black in second and third fourths (darkest toward base), 

 clear white again in seventh eighth, and nearly black again in apical 

 eighth, where it is margined with darker. 



Abdomen broadly ovate, pointed at tip; notiim of segments 1-8 

 closely striate laterally, the striae transverse toward middle of seg- 

 ment and longitudinal at sides. Segment 10 without longitudinal 

 dorsal suture, though irregularly weakened toward tip. 



Measurements of holotype: Length, 1.07 mm.; head, length 

 .120 mm., width .192 mm.; prothorax, length .114 mm., width 

 .228 mm.; mesothorax, width .324 mm.; abdomen, width .372 mm. 

 Antennal segments: 1, 21^; 2, 45/x; 3, 50/^; 4, 45ju; 5, 41^t; 6, 32/x; 

 7, 15m; 8, 34/x; total length of antenna, .28 mm., width at segment 4, 

 .027 mm. 



Male. — Length about .84 mm. Sternum of abdominal seg- 

 ments 3-7 each, with a large, pale, transverse area about nine times 

 as wide as long. Segment 9 with two pairs of dorsal spines, of which 

 the basal is much shorter and stouter than the apical. 



**Proc. U. S. Nat. Mus., vol. XXXVI, p. 174; 1902. 

 ***Tech. Ser. 21, Bur. Ent., U. S. Dept. Agr., p. 14 ; 1911. 



