MAY FLIES AND MIDGES OP NEW YORK 207 



Male. Legs black, the anterior tarsi densely bearded. 



Female. Legs fuscous-brown, fore femora testaceous at the base. 



" The plumes of the male antennae are black, the abdomen is 

 black, that of the female nearly coal-black, with narrow, sharply 

 marked whitish posterior margins of the segments. The legs are 

 black, those of the female more brownish, the fore femora with a 

 somewhat yellowish base. . . . The fourth tarsal joint of the 

 fore legs is about three quarters the length of the third. The 

 male fore tarsi are densely bearded." Greenland. Staeger, 

 loc. cit. 



The male specimens with bare fore tarsi described by Staeger 

 (loc. cit.) as varieties from Greenland, have been separated by 

 Lundbeck (1898) as a distinct species under the name of C. 

 s t a ege r i (q. v.) 



15. CMronomus staegeri Lundbeck 



1898 Chironoinus Lundbeck. Vidensk. Meddel. 271, 48 

 1838 Cliironomus annular is Zett. Ins. Lappon. 809, 2 

 1845 Chironomus hyperboreus Staeger. Krojer : Natur. Tidsskr. 

 n. s. 1:349 



1869 Chironomus Holmgr. K. Svensk. Vet Ak. Handl. 8 :46 



This name was given by Lundbeck to those specimens which 

 Staeger (loc. cit.) considered a variety of C. hyperboreus 

 differing from the type in having the anterior tarsi of the male 

 bare. 



Male. Antennae nearly as long as the thorax, fuscous black, 

 densely plumose, palpi black. Thorax black, scarcely shining, 

 cinereous puinose; the mesothorax with short hairs, the usual 

 three stripes more or less distinct; the scutelluni elevated, bristly. 

 The abdomen fuscous black, pale haired, the apical margin of each 

 segment hoary or cinereous, the caudal appendages narrow and 

 bristly. The wings narrow, cinereous, whitish or lightly smoky 

 tinted, toward the costal margin a little darker; anterior veins 

 strong and dark, the others pale and translucent ; the radial veins 

 straight, toward the tip nearly parallel with the media; the sub- 

 costal vein slightly curved, the peduncle of the cubitus extends 

 but very little distad of the tip of the basal cell, the branches 

 slightly < nrved. Halteres dirty white, the tip of the knob and 

 the base of the peduncle often darker. Legs fuscous black, the 

 middle and hind pairs rather long-haired, the fore tibiae and 

 tarsi thinly and shortly haired, fore metatarsus one fourth longer 

 than its tibia. 



