136 



U.S. NATIONAL MUSEUM BULLETIN 277 



shallow shining depression on upper third of frons; ocellar tubercle 

 prominent, ocelli clear; mouthparts brown, well developed; jjalpi 

 nearly as long as labellum. First antennal segment brown, short; 

 second segment orange-brown, twice as large as first; third segment 

 brown, elongate oval, twice as long as wide. 



Thorax dorsum black-brown with a patch of silvery pile above 

 the orange humeral callus; scutellum and pleural areas red-brown. 

 Wings hyaline, veins yellow; halter stem brown, knob creamy to dark 

 brown above, white below. Legs red-brown tlirough the femora, 

 tibiae light brown, tarsi straw yellow. 



Figure 9L — Scenopinus hagai, new species, male, female: a, wing; b, c, lateral and frontal 

 aspects of male head; d, e, lateral and frontal aspects of female head;/, g, enlarged details 

 of male and female antennae; h-j, ventral, lateral and posterior aspects of male terminalia 

 (ejaculatory syringe apodeme missing); k, ventral aspect of female 8th sternum; /, lateral 

 aspect of female 8th and 9th segments; m, female 9th sternum and bursa. 



Abdomen dark red-brown, segments 3-5 with thin white posterior 

 bands which increase in width toward the tip of the abdomen. For 

 details of terminalia, see figure. Differs from S. gossypius in larger 

 ejaculatory mechanism, parameres, and shape of ninth tergum. 



Female. — Head black-brown; eyes red-brown with a narrow post- 

 ocular rim; frons broad, swollen above the antennae, a median groove 

 through the lower third; back of head and rim of post-ocular flange 

 poUinose; mouthparts red-brown, well developed as in the male; 

 silvery pile bordering oral opening, extending above the antennae 

 onto the frontal area; ocellar tubercle depressed, not prominent, 

 ocelli red-brown. Antennae with first segment short, black-brown; 



