369 



the first description of the male, and a description of both sexes is 

 here given to faciHtate the recognition of the species. The early 

 stages are not known. 



2. Tanypus melanops Meigen 



Tanypus melanops Meigen, Syst. Beschr., Vo]. I, 1818, p. 65; 18. 



Male. — Pale yellow. Eyes black. Thoracic vittae very pale reddish 

 yellow. Abdomen with generally a narrow brownish fascia on each 

 abdominal segment, except the first, near to base. Legs pale yellow, 

 mid and hind tibiae with a short black apical comb. Wings clear, all 

 veins pale yellow. Halteres whitish. All hairs pale yellow. 



Antenna slightly longer than head and thorax together, second 

 joint large, globose. Thoracic hairs soft and rather long. Hairs of 

 abdomen long and numerous ; hypopygium as in Figure 3, Plate 

 XXVIII. Fore tarsus with long hairs, basal joint three fourths as 

 long as fore tibia. Mid and hind legs long-haired. Cross vein slightly 

 before wing-middle; costa ending shortly before curve at apex of 

 wing. 



Female. — Differs in color from the male in the absence of the ab- 

 dominal bands. 



The antennae are distinctly shorter than the thorax, and have 

 rather longer hairs than most females in this genus. The fore tarsus 

 has the basal joint slightly less than three fourths as long as the fore 

 tibia, and is Avithout the long hairs ; the other legs are shorter-haired 

 than in the male. The wings are rather broad, and the cross vein is 

 nearer to base of wing and the costa reaches nearer to curve of wing 

 than in the male. 



Length, 4-5 mm. 



Illinois localities : St. Joseph, Monticello, Urbana, Easton, Ha- 

 vana, and Muncie, April 28 to October 2. Common, occasionallv at 

 light. 



A specimen from Muncie agrees in color with the female. The 

 probability is that nigropunctatiis Staeger is synonymous with 

 uuianops, as practically the only distinction between the two lies in 

 the presence of abdominal fasciae in the former and their absence in 

 the latter. 



Johannsen records melanops from New York, Michigan, Ne- 

 braska, and NeW' Jersey. I have seen specimens from Lafayette, Ind. 

 (Aldrich), and Racine^ Wis. (C. R. Cleveland). 



