MAY FLIES AND MIDGES OF NEW YORK 153 



the usual stripes, sometimes whitish; scuttellum pale. Legs and 

 halteres whitish; wings thickly pilose, subcinereous, the costal 

 margin somewhat yellowish, the basal cells short. Translation. 

 (Loew.) District of Columbia. 



Through the kindness of Mr S. Henshaw of Cambridge, Masis., 

 who examined the type for me, I may add that the fork of the 

 cubitus begins before the M-Cu. crossvein; the basal cells are 

 short, one third or less than the wing in length, and the abdomen 

 is brownish. 



21. Ablabesmyia tibialis Staeger 



1845 T a n y p u s Staeger. Groenl. Antl. Nat. Tids. 2 den. B. B. I. 354 



Blackish ; halteres and legs pale fuscous, hind tibiae of the male 

 long pilose; wings grayish, hairy. Length 2.5 mm. 



Male. The blackish body is without markings; thorax dark; 

 abdomen is somewhat shining and fuscous haired. The legs are 

 sordidly yellowish brown, sparsely haired ; the tibiae, particularly 

 the hind pair, are long-haired. The wings are covered with gray 

 hairs; the vein R runs parallel with the wing margin and ends 

 one third the wing length from the tip, R 4 _{, 5 ends near the tip, 

 the oblique R-M crossvein being near the middle of the wing ; the 

 media is slender and ends at the wing tip ; the fork of the cubitus 

 lies directly under the R-M crossvein; the M-Cu. crossvein is 

 vertical (its position is not, stated by Staeger) ; the branches of 

 the radius are stout, but the cubitus and the anal veins are nearly 

 invisible. 



Lundbeck (1898) p.294 describes the female as follows: 

 Female. Resembles the male, but the abdomen is shorter and 

 stouter; the wings are wider and the veins are a little stouter; 

 with long pile on the hind tibiae, though not so long as that of 

 the male; in other respects like the male. 



Greenland (Staeger and Lundbeck). 



22. Ablabesmyia fastuosa n. sp. 



(P1.19, figs. 16-19) 



A single larva from Eddy pond, Ithaca, N. Y., in April. 



Larva. Reddish, length about 7 mm. Head brown, rather 

 short ; about H times as long as wide ; antennae more than twice 

 as long as the mandible. The basal joint about two thirds of 

 total length (fig.17). Mandible resembles that of monilis, 

 but with a broader lateral tooth (fig.16) . Maxilla prominent with 

 long palpns, hypopharynx and labium like that of monilis; 

 the latter, however, has teeth in the middle shorter than the 

 lateral ones, while the former has the teeth nearly equal in length. 



