478 



from each other. He does not describe the larva beyond stating that 

 the color is reddish. 



58. Chironomus fulvus Johannsen 



Chironomus fnlvus Johannsen, Bull. 86, X. Y. State Mus., 1905, p. 224. 



Below, is Johannsen's description of a pupa supposed to be of this 

 species. 



Pupa. — "This pupa had very much elongated respiratory organs, 

 nearly as long as the body, the main trunk flattened, slender, diminish- 

 ing in diameter toward the end, the apical end subdivided into three 

 or four branches. Each abdominal segment with a transverse row of 

 rather conspicuous spines near the posterior margin, and a number of 

 long setae, three or four pairs of which are laterals, one or two pairs 

 discals, and a marginal pair. . . . The lateral fin of the eighth segment 

 is provided with a somewhat sinuous yellow spur a little caudad of the 

 middle. The caudal fin is fringed with the usual flattened matted fila- 

 ments, those more caudad being longer and broader than the others." 



Imago; Male. — Greenish yellow. Head yellow, flagellum of an- 

 tennae fuscous except at base, the plumes yellow. Mesonotum with 

 fulvous vittae ; scutellum greenish yellow ; postnotum fulvous. Abdo- 

 men green, becoming gradually infuscated from before middle to apex. 

 Legs greenish yellow ; fore tibiae and tarsi brownish, the former 

 usually paler on middle ; apices of mid and hind tarsi brownish. Wings 

 clear, veins yellow, cross vein not infuscated or very slightly so. Hairs 

 on body and legs yellow. 



Frontal tubercles indistinguishable. Pronotum linear on upper 

 half. Hypopygium as in Figure 16, Plate XXXIV. Fore tarsi with 

 rather sparse long hairs, basal joint about one and three fourths as 

 long as fore tibiae (60: 35), cubitus forking almost directly below the 

 cross vein. 



Female. — Fulvous. Abdomen yellow, generally without any indi- 

 cation of green. Legs colored as in the male, but the brown more in- 

 tense and the fore tibia generally entirely brown. 



Length, 3.5-4.5 mm. 



Illinois localities : various places near Havana on the Illinois and 

 Spoon rivers; St. Joseph, Monticello, LTrbana, and Muncie (C. A. 

 Hart and J. R. Malloch). Dates of occurrence range from April 23 

 to September 18; occasionally taken at light. 



Originally described from the female only, obtained at Ithaca, N. 

 Y. I have before me two female specimens from the type locality, 

 submitted by Professor Johannsen. I have seen specimens from Niles 



