436 

 15- Chironomus pedellus DeGeer 



Tipula pedellus DeGeer, Mem. pour serv. a 1 'Hist. d. Ins., Vol. 6, 1776, p. 378. 

 Chironomus pedellus (DeGeer) Meigen, Syst. Beschr. Eur. Zweifl. Ins., Vol. 1, 



1818, p. 28, sp. 16. 



Male. — Differs from fallax principally in the color of the legs, all 

 of the femora, the tibiae, and the tarsal joints being blackened at their 

 apices, and the tibiae at their bases also. In other respects similar in 

 color to fallax. 



The fore tarsi are without long hairs, the basal joint is about a 

 fifth longer than the fore tibiae (78 : 66), and the hypopygium is simi- 

 lar to that of nigricans except that the superior process is compara- 

 tively stouter and less distinctly curved. 



.Female. — Agrees with the male in coloration except that the tho- 

 rax has the anterior angles yellowish. 



Length, 5.5 mm. 



Illinois locality, Algonquin, April 29, 1895 C^^^- ^- Nason). 



Originally described from Europe. Recorded from Wisconsin, 

 New Jersey, and New York. I have seen a specimen from Lafayette, 

 Ind., April 28, 1914 (J. M. Aldrich). 



Except in color characters this species does not seem to be sep- 

 arable from abcrrans Johannsen. There is, however, such a striking 

 difference between the deep black thorax of pedellus and the yellow 

 one of aberrans that I hesitate to suggest that they may be the same 

 species. 



16. Chironomus barbipes Staeger 



Chironomus harhipes Staeger, Krojer: Naturh, Tidskr., Vol. 2, 1839, p. 561. 



Male. — "Hairy, blackish species with hyaline wings having the an- 

 terior veins somewhat reddish ; halteres sordidly yellow, the extreme 

 tips a little darker; the second joint of the fore tarsus a little shorter 

 than the third. Length, 8 mm. 



"Head and basal joint of antenna dull black, the flagellum of the 

 latter and the palpi fuscous. Antennal hairs dark reddish brown. 

 Thorax cinereous, with three faintly marked wide cinereous black 

 stripes ; scutellum, pectus, pleura and metanotum cinereous. Abdo- 

 men black, the posterior margins of the segments cinereous, covered 

 with long brown erect hairs. Genitalia brown, the claspers rather 

 short and stout, the dorsal keel of moderate size. The coxae cinere- 

 ous; the legs testaceous, the bases of the femora, the knees, the tips 

 of the tibiae, and the middle and hind tarsi a little darker, the fore 

 tarsi except basal half of metatarsus brown and densely bearded with 

 long brown hairs. The fore femora and tibiae and basal half of meta- 



