Syrphidae of Nebraska 53 



Xylota pigra (Fabricius). Ent. Syst., iv, 295 (1772) ; Williston, Synop. 

 N. A. Syrph., 227 (1886). 



Six s $ and four 9 9 taken at Monroe Canyon and War- 

 bonnet Canyon, Sioux County, from June 19th to August 24th. 



Xylota bicolor Loew. Cent., v, 39 (1864); Williston, Synop. N. A. 

 Syrph., 229 (1886). 



A 9 collected at Glen, Sioux County, July 12, 1910 (L. 

 Bruner). 



Xylota flavitibia Bigot. Annales, 546 (1884); Williston, Synop. N. A. 

 Syrph., 228 (1886); Hunter, Canad. Ent., xxviii, 101 (1896). 



Seven i s taken at Monroe Canyon, Sioux County; Bad 

 Lands, mouth of Monroe Canyon, Sioux County; Warbonnet 

 Canyon, Sioux County, and Glen, Sioux County, from May 

 28th to July 18th. 



Xylota angustiventris Loew. Cent., vi, 58 (1865); Williston, Synop. 

 N. A. Syrph., 231 (1886). 

 1886. ehngata Williston, Synop. N. A. Syrph., 234. 



Two s s have been taken at West Point, Cuming County , 

 and Warbonnet Canyon, Sioux County, in June. 



Xylota anthreas Walker. List., iii, 556 (1849) ; Williston, Synop. N. A. 

 Syrph., 235 (1886). 



A $ taken at Milford, Seward County. 



Xylota obscura Loew. Cent., vi, 55 (1865); Williston, Synop. N. A. 

 Syrph., 233 (1886). 



A 9 taken at Warbonnet Canyon in Sioux County. 



Xylota fraudulosa Loew. Cent., v, 41 (1864); Williston, Synop. N. A. 

 Syrph., 230 (1886); Hunter, Canad. Ent., xxviii, 101 (1896). 



Five s S and two 9 9 have been taken at Omaha, Douglas 

 County; Milford, Seward County, and West Point, Cuming 

 County, between June 21st and August 17th. 



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