337 



8. JOHANNSENOMYIA CAUDELLI Coquillctt 



Ceraiopogon caudelli Coquillett, Jour. N. Y. Ent. Soc, Vol. 13, 1905, p. 63. 

 Johannseniella caudelli (Coquillett) Malloch, Bull. 111. State Lab. Nat. His-t., 

 Vol. 10, p. 227. 



This species I redescribed in an earlier article of this volume (Art. 

 IV., p. 231 ). In addition to Havana and Algonquin, the Illinois local- 

 ities already recorded, Mr. Hart and the writer have taken this species 

 in great numbers in the pupal stage in the Little Wabash River at 

 Carmi and in the Big Muddy River near Grand Tower. Adults have 

 also been taken at St. Joseph, Dubois, and Carbondale. Pupal stage 

 taken in April; adults, end of April and early part of May. I have 

 seen three males taken by Professor Aldrich at Lafayette, Ind., May 

 2, 1914. 



Ccratopogon flaziccps Johannsen may be a synonym, though I am 

 unable to say definitely from the description. 



9. JOHANNSENOMYIA MACRONEURA, n. Sp. 



Female. — Brownish black, glossy. Face, flagellum of antennae, 

 palpi, and proboscis brownish yellow. Ventral surface of abdomen 

 reddish. Legs brownish black, fore coxae and trochanters and bases of 

 all femora yellowish, all tarsi with the basal four joints whitish, the 

 apical joint and claws black. Wings clear, veins yellowish. Halteres 

 whitish. 



Eyes separated by about one sixth the head-width ; joints of basal 

 half of flagellum distinctly but not greatly longer than broad; entire 

 length of antennae one and a third that of head and thorax together. 

 Thoracic hairs short, rather stout and sparse. Legs stout, not elongate ; 

 hind tibiae at apices as stout as femora; basal joint of hind tarsi about 

 half as long as tibiae ; fifth joint without ventral spines ; claws of fore 

 and mid legs of moderate size, those of hind legs more elongate, each 

 pair equal in size and with a tooth on inner sides. Third vein fused 

 with costa before apex, extending almost to tip of wing; first vein 

 ending at about one third the length of third; base of posterior branch 

 of media obsolete ; cubitus forking slightlv before cross vein. 



Length, 1.75 mm. 



Type locality, Lawrence, Kansas. 



Although this species closely resembles cuqnalis in many respects, I 

 consider that the differences in color (especially that of the halteres) 

 and venation are sufficient to justify me in describing them as different 

 species. The media in ccqualis forks distinctly in front of the cross 

 vein, while in macroneura it forks at the cross vein. The base of the 

 posterior branch of media is indistinct Ijut traceable in both species. 



