242 NEW YORK STATE MUSEUM 



yellowish ; metathorax reddish brown ; wings white with a fuscous 

 subeentral stigma; pectus testaceous; feet pale yellowish; terguni, 

 basal segments pale reddish brown with whitish tips, terminal 

 segments somewhat glaucous. Length 0,3 inch (=7.5 mm.). 

 Habitat United States. 



I have seen specimens, which I identify as this species and 

 agreeing perfectly with the above description, from Kansas, Wash- 

 ington State, California, Wisconsin, Idaho, New Jersey and South 

 Dakota. The male has hairy fore tarsi; the fore metatarsus in 

 both sexes is about one-fifth longer than the tibia. The species 

 resembles cristatus but differs in having paler thoracic 

 sti-ipes, in being generally paler, and in its metatarsal proportions. 

 From f e s t i V u s and tendens it differs in having a darkened 

 crossvein. 



62. Chironomus cristatus Fabr. 



1805 Chironomus Fabr. Syst. Antl. 39, 4 



1821 Chironomus Wied. Dipt. exot. 1 : 11, 1 



1828 Chironomus Wied. Aussereiu-op. Zweifl. Ins. 1 : 14, 1 



1878 Chironomus Ost Sack. Cat'l. Dipt. N. A. p.20 



(P1.29, fig. 14) 



Male. Dorsum of the thorax yellowish, with grayish-broAvn 

 stripes; abdomen yellowish, brown banded. Length 8 mm. 



Antennae brownish. The dorsum of the thorax with the usual 

 three stripes, which, however, are not lead-colored, since they lack 

 the metallic lustre, but are biOAvn, and appear in different lights 

 to be covered with a grayish bloom ; the pleura have grayish spots, 

 the sternum and the metathorax ash-gray. The brown cross band 

 of each segment of the abdomen lies at the base of the segment; 

 each band is somewhat wider at the middle, where it is somewhat 

 prolonged into a fine line, sometimes reaching the posterior margin 

 of the segment. I^egs yellowish. North America. Wiedemann, 

 loc. cit. 



According to Fabricius (1805) the head is blackish and the legs 

 pale with blackish articulations. Some male and female speci- 

 mens from Chicago, 111., and Ithaca, N. Y., agreeing with Wiede- 

 mann's descrij)tiou may be further characterized thus: Face and 

 palpi browu; large basal joint of the antenna brown in the nuile; 

 in the female the antenna is yellow except the apical joint; 

 scutellum yellowish; the last two or three abdominal segments 

 nearly wholly dark browu with cinereous bloom; male genitalia 



