SCENOPINIDAE OF THE WORLD 41 



Length: Female body 5 mm., wing 4 mm. 



Type-locality: Costa Rica. 



Type: Stettiner Museum. (Now housed in [PAS] Warsaw.) 



19. Scenopinus sinensis (Krober) 



Figure 20 (after Krober) 



Omphrale sinensis Krober, 1928a, p. 1. 



This species was known only from the type female which was 

 destroyed during World War II. 

 Male. — Unknown. 

 Length: Female body 4.1 mm. 

 Type-locaUty: Canton, China (Helms). 

 Type: (SMNH) destroyed. 



20. Scenopinus undulafrons, new species 



Figure 21 



This is another of the S. fenestralis type flies found along the west 

 coast of continental North America and is distinguished by its shorter 

 antennae and by its genital structures. 



Female. — Head black; eyes red-brown; the frons broad, slightly 

 swollen, subshining, with a definite longitudinal depression just above 

 the antennae, a slight median depression on the upper half; ocellar 

 tubercle slightly elevated, the median oceUus depressed; ocelli red- 

 brown to clear; postocular flange broad and elevated. Mouthparts well 

 developed, pale tan with numerous red hairs; palpi short, red-brown, 

 lighter at tip. Antenna with first segment dark brown, second red- 

 brown, third red-brown, less than twice as long as broad, see figure. 



Thorax dorsum black, rugose, with short hairs; humeral caUus 

 orange-brown, supra-alar caUus red-brown. Wings smoky brown, veins 

 brown. Halter stem red-brown, knob red-brown. Legs with front coxa 

 through the tibia red-brown; the first tarsal segment straw yellow, 

 darkening distally. 



Abdomen and terminaUa red-brown; see figure for details of eighth 

 sternum and bursa. 



Male . — Unknown . 



Length: Female body 5.2 mm., wing 3.5 mm. 



Type-locahty: Terrace, B.C., Canada (Mrs. M. E. Hippisley). 



Figure 17. — Scenopinus physadius (Scguy)^ male, female: a, wing; b, f, lateral and frontal 

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

 of antenna; g-i, ventral, lateral and posterior aspects of male terminalia; ;", ventral aspect 

 of female 8th sternum; k, lateral aspect of female 8th and 9th sternum; /, female 9th 

 sternum and bursa. 



