FLIES OF GENUS RIVELLIA — NAMBA 



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Figure 5. — a-c, Rivellia melliginis (Fitch): a, wing; b, lateral aspect of ninth tergite and 

 proctiger of male; c, lateral aspect of aedeagus. d, e, R. viridulans Robineau Desvoidy: 

 d, lateral aspect of ninth tergite and proctiger of male; e, lateral aspect of aedeagus. 

 /-J, R. texana, new species: /, wing; g, lateral aspect of ninth tergite and proctiger of male; 

 h, lateral aspect of aedeagus; i, dorsal aspect of aedeagus. j-l, R. maculosa, new species: 

 ;', wing; k, lateral aspect of aedeagus; /, lateral aspect of ninth tergite and proctiger of 

 male. 



