'^41 



MAY FLIES AND MIDGES OF NEW YORK 



1850 Chironomus Zett. Dipt Scand. 9 :3498 

 1S4 Chironomus nigroviridis Macq. Suit. Button. 1.51 

 1850 Chironomus Zett. Dipt. Scand. 9:3529 



isS ChU-onomus venustus Staeger. KroJ. Nat. Tidsskr. 2.562 

 1850 Chironomus Zett. Dipt. Scand. 9:3496 

 1864 Chironomus Schiner. Fauna Austr. 2:603 

 1847 Chironomus waldheimii Gimmerth. Bui. Soc. Imp. Nat. 

 Moscou. 20. 2 :142, 69 

 Larva and pupa. Miall and Hammond (1900) state that the 

 lai^n blood' red, and possesses both the ventral blood gills o 

 the eleventh segment and the anal blood gills of the twelfth The 

 abinm is as shown on pl.23, flg.l. The pupa is of the nsual type, 

 esemW ng the one shown on pl.l6, flg.2. The abdominal mark- 

 ing and the spurs of the lateral fin of the eighth segment are not 



"'llni'/o'male and female. Head yellowish; palpi and antennae 

 dark br;,.n, the last usually yellowish or reddish ^- «- ^^^ ^^ 

 base the antennal hairs of the male pale brown with 1 eddish 

 velTow sheen; verv dark varieties (var. nigroviridis dark brown 

 with pale brownish sheen. Thorax yellow, yellowish green 

 om times very pale green; the thoracic stripes, ^^e pleura and 

 the sternum chestnut, sometimes ferruginous, sometimes b ackish 

 he — orax always blackish brown ; the -i^^^^^^--^/^^;, 

 nf the male divided by a fine depressed line, m the female more 

 d St nc^ epLted. ^Abdomen of the male a translucen green 

 vel owish green; the second and the following segments ea h 

 witi a hirge blackish brown dorsal mark which frequently is m 

 The fo'm of a cross band; the last segments are wholly b ackish 

 brown' with a whitish shimmer; abdomen of the female blackish 

 brown with pale green pruinose margins to the segments Legs 

 pile "reen or velloVish; tips of the tibiae and of the tarsal joints 

 brown the fore metatarsus 1.5 times as long as the tibia and 

 nearlv' twice as long as the second joint; the following joints 

 ' adulal "1 minishing in length; the fore tarsi bare. Halteres 

 Yellowish. Wings hyaline, the veins pale brown, the crossvem 

 Suany slightly clouded. length 5.75 to 7.5 mm. Connecticut, 

 Pennsylvania, South Dakota, Kansas. 



61. Chironomus stigmaterus Say. 

 1823 Chironomus Say. Journ. Acad. Nat. Sc. Phil. 3:15,6 

 1859 Chironomus Say. Compl. Wr. 2:42, 6 



1898 Chironomus glaucur us Wied. Aussereurop. zweifl. 1.15,3 

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

 Terffum pale, toward the tip glaucous. 



Male Antennae pale yellowish brown; thorax pale cinereous 

 lines very pale testaceous, sometimes tinged with dusky; scutel 



