DIPTERA FROM NEPAL 123 



(6-o) and between Diastata and Apsinota (5-0), and that among the genera of 

 Drosophilinae, Liodrosophila, Paramycodrosophila, and Chaetodrosophilella are 

 mutually closely related and the subgenus Dichaetophora is closer to Drosophila s. str. 

 than to any other subgenus of the genus Drosophila (Tables 3 and 4). 



Table 3 

 The difference value (d.v.) of phallic formulae between every two genera. 



Crypt orhaetum 



























Diastata 



6.5 

























Campichoeta 



8.5 



3.0 























Apsinota 



7.5 



5.0 



6.0 





















Leucophenga 



8.5 



3.0 



2.0 



6.0 



















Microdrosophila 



10.0 



5.5 



6.5 



5.5 



4.5 

















Liodrosophila 



4.5 



4.0 



7.0 



3.0 



7.0 



6.5 















Paramycodro- 

 sophila 



7.0 



4.5 



6.5 



4.5 



7.5 



7.0 



2.5 













Chaetodroso- 

 philella 



7.5 



5.0 



6.0 



4.0 



8.0 



6.5 



3.0 



2.5 











Scaptomyza 



6.0 



3.5 



6.5 



4.5 



6.5 



4.0 



3.5 



5.0 



6.5 









Diathoneura 



5.5 



5.0 



6.0 



6.0 



6.0 



5.5 



5.0 



5.5 



4.0 



4.5 







Drosophila 



7.0 



3.5 



5.5 



5.5 



4.5 



5.0 



4.5 



5.0 



4.5 



6.0 



4.5 



Table 4 



The difference value (d.v.) of phallic formulae between every two subgenera of the 



genus Drosophila, and between each subgenus and Leucophenga. 



Leucophenga 















Scaptodrosophila 



3.5 













Dichaetophora 



6.0 



4.5 











Hirtodrosophila 



8.0 



7.5 



7.5 









Sophophora 



5.0 



3.5 



7.0 



7.5 







Drosophila 



7.5 



5.5 



1.5 



7.5 



7.5 



