216 NEW YORK STATE MUSEUM 



' A specimen from New Jersey is doubtfully referred to as this 

 species by Johnson in Smith's catalogue of the insects of New 

 Jersey. Several bred specimens from Ithaca, N. Y. 



26. Chironomus chloris Meigen 



1818 Chironomus. Syst. Beschr. 1:28, 17 



1850 Chironomus Zett. Dipt. Scand. 9 : 3511, 27 



18(>4: Chironomus Schiner. Fauna Austr. 2 : 604 



1877 Chironomus V. d. Wulp. Dipt. Neerl. p.256, 12 



Length 5.5 to 7.5 man. Head blackisli, antennae and palpi dark 

 brown; antennal hairs in the male brown; paler toward the tip. 

 Thorax shining, blackish green, with black longitudinal stripes, 

 the ground color usually so dark that the thorax appears wholly 

 shining black, as do also the scutellum, metanotum, pectus and 

 pleura ; the pectus with light gray pruinose appearance. Abdomen 

 olive green, black toward the caudal end; the anal. segment of the 

 male half as long as the preceding segment; the claspers small, 

 slightly broadened at the middle; the hair of the abdomen gray- 

 ish ; after death the abdomen usually becomes wholly black. Legs 

 brownish yellow; the femora, at least the knees, the tips of 

 the tibiae and tarsal joints dark brown, the last tarsal joint 

 wholly darkened; fore metatarsus 1.5 times as long as its tibia; 

 fore tarsi of the male somewhat hairy but not bearded, the 

 posterior legs of both sexes delicately ciliate. Halteres pale 

 yellow, the knobs slightly darkened. The wings when held against 

 the light appear brownish yellow, when held over a dark surface 

 they appear whitish ; the veins very pale brown ; crossvein not 

 darkened. Translation from V. d. W'ulp. loc. cit. 



The female has a yellow dorsum of thorax with three black 

 stripes, the scutellum is yellow, and the abdomen sometimes has 

 narrow whitish incisures. 



According to V. d. Wulp (1S68) this European species also 

 occurs in the United States. Weyenbergh (1874, p. 151) says that 

 the larva is almost colorless, and is found upon weeds hanging 

 into the water. 



27. Chironomus devinctus Sav 



1829 Chironomus Say. Journ. Acad. Nat. Sc. Phil. 6 : 150 

 1859 Chironomus Say. Compl. Wr. 2 : 349 



1878 Chironomus Ost S.ack. Cat'I, Dipt. N. A. p.20 



(P1.28, fig.l4) 



Tergum black, incisures white ; feet with black incisures ; body 

 dusky; stethidium dusky livid; thorax trilineate and blackish; 

 scutel dull honey yellow, halteres and wings white ; tergum brown- 



