232 NEW YORK STATE MUSEUM 



49. Chironomus viridicollis V. d. Wulp 



1858 Chironomus V. d. Wulp. Tijds. v. Ent. 2 : 161, 2 



1877 Chironomus V. d. Wulp. Dipt. Neerl. p.254, 9 



1898 Chironomus Johnson, in Smith's Cat'l. of Ins. N. J. p.627 



Male and female. Thorax green, shining, black, striped; ab- 

 domen fuscous; legs yellowish green, the knees and the fore tibiae 

 black; the fore tarsi of the male bare, male anal appendages small 

 and slender. Length 6.75 to 9 mm. 



Antennae and palpi dark brown, the antennal hairs of the male 

 yellowish gray. Thorax shining, bright green; the dorsal stripes 

 (of which the middle one is divided by a fine line), two or three 

 spots at the root of the wing, the sternum, and the metauoturn, 

 brownish black. Abdomen shining, blackish, with yellow hairs; 

 the posterior margins .of the segments appear light gray, and a 

 longitudinal dorsal stripe sometimes becomes visible. The last 

 abdominal segment of the male is not as long as the preceding, its 

 appendages are filiform, pointed, not longer than the eighth seg- 

 ment. Legs greenish yellow; the tip of the fore femur, the en- 

 tire fore tibia, the knees of the last pair of legs, the tips of the 

 tibiae of the last pair of legs, the tips of the first two joints of all 

 the tarsi, and the whole of the last tarsal joint of all the legs, 

 brownish black. The fore metatarsus is about H times as long 

 as its tibia, the next tarsal joint is one half as long as the meta- 

 tarsus, the third and fourth are still shorter, and of about equal 

 length, the fifth is the shortest. The fore tarsi of the male are 

 not hairy. The last pair of femora and tibiae are pale haired. 

 Halteres with a pale peduncle and a greenish head. Wings almost 

 hyaline, the costal margin with a brownish tint, the veins brown- 

 ish, the anterior ones darker; the crossvein somewhat darkened. 

 Translation from V. d. Wulp, loc. cit. 



Reported by Johnson from New Jersey. A number of speci- 

 mens from Ithaca N. Y., cannot be distinguished from the 

 European species. The wing venation is as shown on pi. 29, fig.9. 



50. Chironomus jucundus Walker 



1848 Chironomus Walker. List Dipt. Brit. Mus. 1:16 



1878 Chironomus Ost. Sack. Cat'l. Dipt N. A. p.21 



Male. Wings bare; chest red, with a broad black stripe on 

 each side; scutcheon black; abdomen yellow, hairy; hind borders 

 of the segments and the whole of the latter segments, black; 

 feelers tawny, and adorned with tawny hairs; legs pale yellow, 

 hairy; tips of shanks brown; wings white; veins pale yellow; 

 poisers white. Length of body, 2-| lines (5 mm.) ; of the wings, 4 

 lines (8 mm.). Georgia. Walker, loc. cit. New Jersey (Johnson, 

 1899). 



