MAY FLIES AND MIDGES OP NEW YORK 201 



vein (cubitus) remainder of wing hyaline; halteres yellow; length 

 4.5 mm. Kansas City, Missouri. 



3. Chironomus varipennis Coquillett 

 1902 Chironomus Coquillett. Proc. U. S. Nat Mus. 25 :94 



Male. Head and body dark brown, a large dull yellowish hu- 

 meral spot, antennae except the first joint yellow, the hairs gray; 

 thorax opaque, largely gray pruinose, narrow hind margins of 

 abdominal segments gray pruinose; femora brown, the ends nar- 

 rowly and a 'band before the apex of each, yellow; front tibiae 

 very short, yellow, the bases brown, other tibiae brown, an indis- 

 tinct yellowish ring beyond the base; front tarsi wanting, the 

 others yellow; wings whitish, marked with 11 brown spots as 

 follows: Three in a row behind the fifth vein (cubitus), one before 

 middle and another in middle of apical margin .of third posterior 

 cell (cell CuJ one in base of first posterior (cell R 4 + 5 ), another 

 in the cell below it, and a third midway between the latter and the 

 base of this cell, one in middle and another in apex of first pos- 

 terior cell (cell R^) , also a small one in apex of second posterior 

 cell (cell M) ; halteres whitish; length, 3 mm. Las Vegas, Hot 

 Springs, N. M. 



4. Chironomus octopunctatus Loew 



1861 Chironomus Loew. Wiener Ent. Monatschr. 5:33 

 1878 Chironomus O. S. Cat'l. N. A. Dipt, p.21 



Male and female. Pallidly yellow, the tips of femora and tibiae 

 black, wings with four blackish spots. Length 1.2 mm., wing 

 1.3 mm. 



Very pale yellow, legs whitish; posterior part of the thorax 

 shining white and on each side with a darker line. The abdomen 

 fuscous with posterior margin of each segment pale yellow. The 

 tips of the femora rather widely, and of the tibiae rather narrowly, 

 black. Anterior tarsi six times longer than the tibiae. Wings 

 whitish, veins pale yellow; each wing with four blackish spots, 

 in certain lights iridescent; the first is at the anterior fork, the 

 second is between that and the tip of the wing; the other two are 

 at the posterior margin ; one of them, composed of two contiguous 

 spots, is situated where the second branch of the cubitus enters 

 the wing margin, the second one midway between this and the 

 base of the wing. Cuba. Translation. Loew, loc. cit. 



5. Chironomus scalaenus Schrank 



1803 T i p u 1 a Schrank. Fauna Boica. 3 : 73, 2324 ' 

 1818 Chironomus Meigen. Syst. Beschr. 1:54 

 1850 Chironomus Zetterstedt. Dipt. Scand. 9:3501 

 1864 Chironomus Schiner. Fauna Austr. 2 : 600 

 1877 Chironomus V. d. Wulp. Dipt Neerl. 1 : 266 



