180 PROCEEDINGS OF THE NATIONiVL MUSEUM 



VOL. 83 



General form about as in uhieri but proportionately smaller and 

 males slightly more robust. Pronotum of males only slightly longer 

 than crown. Fore wing of female as in u?deri but with venation 

 less distinct and anteapical cells usually not apparent. Fore wing 

 of male as in uhlen but shorter, extending to tip of abdomen. 



Posterior margin of seventh sternite of female as in uhieri but with 

 lateral angles more produced. Pygofer processes of male as in uhieri. 

 Aedeagus without numerous setae on distal portion. Style similar 

 to that of uhieri but with the dorsal terminal projection more slender 

 and more strongly hooked and the toothlike projection near the apex 

 more prominent and somewhat hooked. There is some variation in 

 the shape of the distal portion of the style in both uhieri and nuda, 

 but in general 7\uda has this part broader and shorter with respect 

 to the shaft of the style than does uhieri. 



Type locolity. — Los Angeles County, Calif. 



Type and paratypes. — U.S.N.M. no. 52226. 



Paratypes. — In collection of E. D. Ball. 



Remarks. — Described from 13 specimens as follows : Holotype male, 

 allotype female, and tv.o male paratypes from the type locality, 

 Coquillett collector; three male paratypes from Los Angeles, Calif., 

 Uhler collection; three male paratypes and one female paratype 

 labeled "California" from the collections of Uhler and Coquillett: 

 and one male and one female paratype from Ontario, Calif., April 

 21, 1908, E. D. Ball. 



Distribution. — This species appears to be limited to southern Cali- 

 fornia. In addition to the types there are specimens at hand from 

 San Diego, Mint Canyon, Saugus, Cajon Pass, Warner Springs, and 

 San Jacinto Mountains. 



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U S SOVERNMENT PRINTINS OFFICE, f 933 



