3ai 



Antenna about one and a half times as long as head and thorax 

 combined. Hypopygium large, protruding, apical portion of lateral 

 arm about two thirds as long as basal portion, tapering to a fine point, 

 at apex distinctly incurved. Legs as in female, though the fore fem- 

 ora have fewer thorns. Third vein extending slightly less than to three 

 fourths the wing-length; first vein slightly less than half the length of 

 third ; cubitus forking very slightly beyond the cross vein. 



Length: male, 2-2.5 rnrn. ; female, 2.5-3 mm. 



Illinois locality, Muncie, July 5, 19 14. A very large series of both 

 sexes was taken May 24, 1914, at the same place. All the specimens 

 were taken, bv Mr. Hart and the writer, in sweeping vegetation on the 

 banks of Stony Creek. 



The only previous record of this species from this country is that 

 contained in the New Jersey list of insects. Originally described from 

 Europe. 



Serromyia Meigen 



This genus is, as far as is known, represented in Illinois by a single 

 species, though it is possible that femorata Meigen may also occur. 



I. Serromyia femorata Meigen 



Ceratopogon femoraius Meigen, Klass. n. Beschr. Eur. Zweill. Ins., Vol. 1, 1804, 



p. 24. 

 Serromyia femorata Meigen ; Malloch, Bull. 111. State Lai). Nat. Hist., Vol. 10. 



p. 217. 



This species was originally described from Europe, where it is one 

 of the commonest species belonging to the group with spinose femora. 

 It has been recorded from Alaska, by Coquillett, and I have seen a fe- 

 male specimen, submitted by Professor Johannsen, from Ellis, N. Y., 

 June 13, 1904. 



2. Serromyia crassifemorata Malloch 



Serromyia crassifemorata Mallocb, Bull. 111. State Lab. Nat. Hist., Vol. 10. 

 Art. 4 (1914), p. 218. 



This species is separable from fcuiorata by the structure of the 

 hind tarsal claws, which are equal in length, whereas in femorata they 

 are verv unequal, the inner being four times as long as the outer. 



Type locality, Mt. Carmel, 111., May 28, 1884 (H. Garman). Two 

 females. I have seen no other specimen. 



