SCENOPESIDAE OF THE WORLD 47 



3. Halter knob cream 4 



Halter knob white 7 



4. Halter cream above, white below, antenna brown . . S. keiseri, new species 

 Halter knob cream, antenna black S. bouvieri (S6guy) 



5. Halter knob brown or black-brown 6 



Halter knob tan dorsally, whiter ventrally, antenna orange at base darkening 



at tip S. brunneus (Krober) 



6. Halter knob brown, antenna brown darkening distally 



S. inquilinus (S6guy) 

 Halter knob black-brown above, wliite below, antenna black-brown 



S. angustifrons (Krober) 



7. Antenna red-brown, frons flat, wide, shining . . S. gromieri, new species 

 Antenna black-brown, frons narrow, rugose S. balteatus Lamb 



8. Wing brown 9 



Wing milky, halter white S. monodi Seguy 



9. Halter knob red-brown to black 10 



Halter knob yellow-brown S. flavipes (Krober) 



10. Halter red-brown or base of knob red-brown remainder v/hite .11 

 Halter knob brown or black 14 



11. Halter knob red-brown 12 



Halter knob with base red-brown, remainder white 



S. anthrax, new species 



12. Halter knob red-brown shining antenna orange, darkening at tip, palpus 



broad and paddle-like S. palmulapalpus, new species 



Halter knob red-brown, antenna red-brown, palpus normal 13 



13. Frons widening dorsally, cell R5 narrowing at tip . . S. evansi, new species 

 Frons widening ventrally, cell R5 nearly uniformly wide throughout 



S. katbergi, new species 



14. Halter knob brown, antenna dark, mouthparts normal 15 



Halter knob black-brown, antenna yellow, mouthparts atrophied 



S aethiopicus (Lindner) 



15. Halter knob brown above cream below, antenna orange basally darkening 



distally, cell R5 parallel sided S. madagascariensis Enderlein 



Halter knob brown, antenna black, cell R5 broad, vein All + 2 ending in tip 

 of wing S. oldenbergi (Krober) 



ORIENTAL AND PACIFIC SPECIES 



1. Males 2 



Females 4 



2. Wing brown, halter knob red-brown or black, antenna black or cream ... 3 

 Wing hyaline, halter knob white, antenna yellow-brown, terminalia with two 



long aedeagal spines S. lucidus Becker 



3. Halter knob with base red-brown, remainder white, no white bands on the 



abdomen, antenna black S. papuanus (Krober) 



Halter knob black, antenna cream, abdomen with white bands 



S. opacus deMeijcre 



4. Wing brown, halter knob brown or with red-brown 5 



Wing hyaline, halter knob white S. lucidus Becker 



5. Halter knob with base red-brown, remainder white, antenna black 



S. papuanus (Krober) 

 Halter knob brown, antenna cream S. opacus deMeijerc 



