DIPTERA FROM NEPAL 15 



- Periorbit not greatly broadened anteriorly. Anterior dorsocentrals situated much 



behind suture ............ 5 



5 Front broad, glossy, and flat. Postverticals minute or absent. Anal vein and cell 



abbreviated ............ 6 



- Front not exceedingly broad, nor glossy, nor flat. Postverticals usually long. 



Anal vein and cell usually well developed ....... 8 



6 Orbitals two, both proclinate, no reclinate. Antenna exceedingly large. Fore 



femur without a row of anteroventral spinules . LISSODROSOPHILA (p. 45) 



- Reclinate orbital present. Antenna normal. Fore femur with a row of antero- 



ventral spinules ............ 7 



7 Postvertical and anterior reclinate orbital absent. Only one sternopleural 



HYPSELOTHYREA (p. 47) 



- Postvertical and anterior reclinate orbital present, though minute. Two sterno- 



pleurals LIODROSOPHILA (p. 48) 



8 Postvertical minute. Anterior reclinate orbital large, as long as proclinate. Second 



costal section somewhat swollen at tip, with deep incision 



PARAMYCODROSOPH1LA (p. 55) 



- Postverticals usually not minute. Anterior reclinate orbital shorter than proclinate. 



Second costal section not swollen apically, with incision shallow ... 9 



9 More than two pairs of dorsocentrals present . CHAETODROSOPH1LELLA (p. 57) 



- Dorsocentrals in two pairs .......... 10 



10 Acrostichal hairs in two or four rows. Body and wing slender SCAPTOMYZA (p. 58) 



- Acrostichal hairs usually in six or more rows. Body and wings usually not slender 



DROSOPHILA (p. 66) 



Subfamily STEGANINAE 

 ST EG AN A Meigen 

 Stegana Meigen, 1830 : 79. 



Type-species : Drosophila curvipennis Fallen, 1823 : 1 (Europe), [teste West- 

 wood, 1843 ; according to Wheeler, i960]. 



Subgenus Steganina Wheeler 

 Steganina Wheeler, i960 : no. 



Type-species: Musca coleoptrata Scopoli, 1763 : 338 (Europe). 



Stegana (Steganina) nigrifrons de Meijere 

 (Text-figs. 27-28) 



Stegana nigrifrons de Meijere, 191 1 : 418 (Java) ; Duda, 1923 : 37 (Formosa) ; Duda, 1924a : 182 



(Java) ; Duda, 1926 : 45 (Sumatra) ; Duda, 1939 : 13 (S. Africa). 

 Stegana (Steganina) nigrifrons de Meijere ; Wheeler, i960 : no. 



$. Body about 2 -2 mm. Head slightly narrower than thorax. Eye dark purplish red, bare. 

 Antenna with second segment yellowish orange, anteriorly brown ; third velvety black, pube- 

 scent, anteroventral corner rectangular, posterior margin rounded, basally orange-yellow. 

 Palpus slender, pale yellowish orange, with about three black ventral setae. Ocellar triangle 

 black. Periorbit pale yellowish grey, half as long as front, straight, posteriorly somewhat 

 broadened. Front deep glossy brown, concave, anterior width nearly two-thirds as broad as 

 length down middle, posteriorly two-fifths as broad as head width. Clypeus yellowish grey. 

 Face brownish black, lower margin broadly white. Carina short, half as long as face, high, 



