Tabanidae of Nebraska 11 



This is a common species in the eastern part of the state. 

 Four s s and thirteen 9 9 have been collected at the follow- 

 ing places: Omaha, Douglas County; Lincoln, Lancaster 

 County; Louisville, Cass County; South Sioux City, Dakota 

 County; Halsey, Thomas County, and Duff, Rock County, from 

 June 16th to September 10th. 



Tabanus punctifer Osten Sacken. Prodrome, ii, 453 (1875) ; Hine, 

 Ohio Naturalist, v, No. 2, 242 (1904). 



This an extreme western species. There are five $ 6 and 

 twenty-three $ 5 from Monroe Canyon, Warbonnet Canyon 

 and Glen, Sioux County, and Glenn Rock Canyon, Banner 

 County, June 13th to September 2nd. 



Tabanus stygius Say. Jr. Acad. Sci. Nat. Phil., iii, 33 (1823); Hine, 

 Ohio State Acad. Sci. Special Papers, No. 5, 54 (1903). 



There is only one ( S ) specimen represented in the Univer- 

 sity collection and it was with considerable hesitancy that it 

 has been idenitfied with the above species. This species is 

 very closely related to nigrescens and the $ $ are separated 

 only through great familiarity. As nigrescens has never been 

 collected this far west, at least to my knowledge, and the 

 thorax of nigrescens is shining black, it was determined as 

 stygius. It was collected at Weeping Water, Cass County, 

 July 20th (H. S. Smith). 



Tabanus bicolor Wiedemann. Dipt. Exot., i, 96 (1821); Hine, Ohio 

 State Acad. Sci. Special Papers, No. 5, 48 (1903). 

 1848. fulvescens "Walker, List., i, 171; Osten Sacken, Prodrome, ii, 



460 (1875) ; Catalogue 229. 

 1855. ruficeps Macquart, Dipt. Exot., Suppl., 5, 35. 



Only two S $ and two $ $ of this species are represented 

 in the collection. One $ and $ were collected in Sioux County, 

 one i at McCook, Redwillow County, and one $ at Haigler, 

 Dundy County, all western localities. June 20th to August 

 20th. 



117 



