Vol. xxvii] 



ENTOMOLOGICAL NEWS. 



463 



A new Species of Exoprosopa (Dip.). 



By F. R. COLE, Bureau of Entomology, U. S. Department of 



Agriculture.* 

 Exoprosopa celer sp. nov. 



$ . Length 9 mm. Wing 12.5 mm. Face yellowish brown, the color 

 extending a short distance above antennae. Front blackish, with yel- 

 lowish tomentum and short black pile. Short black pile on face. Occi- 

 put blackish with silvery white tomentum near orbits, thicker near 

 emargination of eyes. First joint of antennae reddish brown, the sec- 

 ond and third joints black. Arista as long as third joint. 



Thorax blackish, semi-shining. Scutellum dull reddish brown, black 

 at base. 



A. Exoprosopa celcr sp. nov. B. Lateral view of head. C. Antenna (much 

 enlarged). D. Anal segments of male from side. 



Abdomen light reddish brown, first segment black. Black stripe on 

 dorsum of abdomen, gradually narrowing from base, and reaching only 

 about half way on sixth segment. Black does not quite reach posterior 

 margin of segments. Abdomen with black tomentum. \Yhite tomen- 

 tose cross-band at base of second abdominal segment. White spot on 

 each side of third segment near posterior margin. 



Legs reddish. Front tarsi darkened and very slender. 



Wings very long and narrow, and deep brownish black in color. 

 Narrow hyaline cross-band near base of wing, clear only in anal and 

 axillary cells. Hyaline band in center of wing reaches to marginal cell. 



Ty he United States National Museum, Cat. No. 20,295. 

 One male. 



Habitat East Highlands, California, Sept. 17, 1914. 



This handsome species appears to have no closely related 

 forms among those so far described. Only one specimen wa-; 

 collected. It is a very swift flyer, alighting on rocks and sand 

 in the hot sun. 



*By permission of the Secretary of Agriculture. 



