242 NEW YORK STATE MUSEUM 



yellowish ; meta thorax reddish brown ; wings white with a fuscous 

 subcentral 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 

 stripes, 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. Aussereurop. Zweifl. Ins. 1 : 14, 1 



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



(P1.29, flg.14) 



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

 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 brown, 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. Legs 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 description may be further characterized thus : Face and 

 palpi brown; large basal joint of the antenna brown in the male; 

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

 scutellum yellowish; the last two or three abdominal segments 

 nearly wholly dark brown with cinereous bloom; male genitalia 



