Syrphidae of Nebraska 55 



County; South Bend, Cass County, and Sioux County, all in 

 May. 



Spilomyia Meigen 

 KEY TO THE SPECIES 



1. Second joint of antennae much longer than first; second seg- 

 ment of abdomen with a broad arcuate yellow band, the third 

 and fourth with a slender median interrupted one quadrifasciata 



Second joint of antennae not much longer than the first, third 

 with an entire yellow band longicornis 



Spilomyia quadrifasciata (Say). Long's Exped., App., 377 (1824) ; Wil- 

 iston, Synop. N. A. Syrph., 248 (1886) ; Hunter, Canad. Ent., 

 xxviii, 101 (1896). 



Five £ s and seventeen $ $ have been collected at the 

 follov^ing localities: Omaha, Douglas County; Lincoln, Lan- 

 caster County; Hardy, Nuckolls County; Mouth of Gordon 

 Creek, Sheridan County; Glen, Sioux County, and Monroe 

 Canyon, between August 14th and September 22nd. 



Spilomyia longicornis Loew. Cent., X, 49 (1872) ; Williston, Synop. 

 N. A. Syrph., 245 (1886); Townsend, Trans. Amer. Ent. Soc, 

 xxii, 54 (1895). 



A s taken at Omaha, Douglas County, September 8, 1913 

 (L. T. Williams). 



Cerioides 

 Cerioides Rondani 



KEY TO THE SPECIES 



1. Antennal process of front not more than half as long as the 

 first joint of antennae, almost wholly wanting, first joint of an- 

 tennae very slender, nearly as long as the two following to- 

 gether; face vertical, not at all excavated in profile; second 

 segment of the abdomen much constricted, third and fourth seg- 

 ments each with two arcuate spots wilKstoni 



161 



