26 INSECUTOR INSCITI^ M^NSTRUUS 



sculpture; frontal costa notched at about 60°; cheeks rather 

 strongly arched. Eyes about half as long as head and 0.7 as 

 wide as their interval, prominent, protruding, pilose. Ocelli 

 normal, opposite about middle of eyes. Antennae slender, 

 about 3.7 times as long as head, of normal structure ; segment 1 

 about concolorous with paler portions of head ; 2 nearly cinna- 

 mon brown ; 3 and 4 mouse gray, paler at extreme base ; 5-7 

 darker mouse gray, 5 usually pale at base. Maxillary palpi 

 three-segmented. 



Prothorax 1.5-1.6 times as wide as long, without evident 

 sculpture, sides gently rounded ; two pairs of long, slender bris- 

 tles at posterior angles ; three additional pairs of smaller bristles, 

 at anterior angles, at posterior third of lateral margins, and on 

 posterior margin, respectively. Wings of fore pair about 15 

 times as long as wide, nearly uniform light mouse gray, appear- 

 ing slightly darker in apical three-fourths because of the 

 slightly darker veins ; costal margin with about 23 bristles ; 

 anterior vein with 10 bristles, of which 7 are in the basal third, 

 the remaining three at 9-15, 12-15, and 14-15 beyond base of 

 wing, respectively; posterior vein with about 11 bristles, the 

 first of which is usually opposite the last bristle in the basal 

 series of the anterior vein, and the last of which is opposite a 

 point nearly midway between the last two on the anterior vein. 



Abdomen of normal form, with tenth segment longitudinally 

 sulcate above in distal half or two-thirds ; bristles on segments 

 9 and 10 long, brown. 



Measurements of holotype : Length 1.2 mm. ; head, length 

 0.114 mm., width 0.152 mm. ; prothorax, length 0.130 mm., 

 width 0.210 mm. ; pterothorax, width 0.276 mm. ; abdomen, 

 width 0.324 mm. Antennal segments: 1, 30|x; 2, 40|x; 3, 

 60[x; 4, 53\i; 5, 44|i; 6, 61^; 7, 21^1 ; total length of antenna, 

 0.309 mm. ; width at segment 4, 0.018 mm. 



Male. — Length about 0.8 mm. Color nearly uniform deep 

 chrome, prothorax and abdomen sometimes lightly shaded with 

 gray ; segment 1 of antenna cream color ; 2 clay color, darkest 

 in entire antenna; 3-7 light mouse gray, 3-5 pale at base. 

 Head proportionately longer than in female, about 1.2 times 

 as wide as long. 



