MAY PLIES AND MIDGES OP NEW YORK 145 



7. Ablabesmyia venusta Coquillett 

 1902 T a n y p u s Coq. Proc. U. S. Nat. Mus. 25 :91 



(P1.27, fig.8) 



Male. Head black, mouth parts brown, antennae pale yellow, 

 middle of joints of basal half and whole of the apical joint brown, 

 the hairs broAvn and yellowish; thorax black, opaque, mottled 

 with grayish pruinose spots and lines; seutellum yellowish, its 

 narrow base, stripe in middle, and nearly whole of under side 

 dark brown ; abdomen whitish, an interrupted band on the hind 

 end of the first five segments and nearly the whole of the follow- 

 ing segments brown; legs yellow, two bands near apex of each 

 femur, one near base of each tibia, also apices of tibiae and of joints 

 of tarsi brown; wings covered with hairs, hj-aline, marked with 

 aibout 11 brown spots located at extreme base of wing, on 

 humeral crossvein, before middle of axillary cell, beyond middle 

 of anal cell, on the central crossveins, near middle of cell R14.5 

 near apex of this cell, beyond middle of cell M and of cell Cu, and 

 at the apices of the vein R^^ and of R, ; R^ near its apex connected 

 with Ro by Rg ; cubitus forks slightly before the crossvein. Length 

 4 mm, Los Vegas Hot Springs, N. M. 



Four male specimens from Leland Stanford jr. University, 

 California, agree with the description given by Mr. Coquillett, 

 excepting that the fasciae at the posterior margins of the abdomi- 

 nal segments are not interrupted, but are produced forward a 

 little at the middle. Upon the ventral surface of each segment 

 in front of the posterior margin there is a black spot. The large 

 basal joint of the antenna and the genitalia are brown. Hal- 

 teres yellow. 



Four female specimens from the same place are like the male, 

 but the antennae are wholly fuscous, and the abdomen is darker, 

 with more vellowish, and the venter is brown. The fore meta- 

 tarsus is about six tenths as long as its tibia. 



8. Ablabesmyia guttularis Coquillett 

 1902 T a n y p u s Coq. Proc. U. S. Nat. Mus. 25 : 92 



Head and its members dark broAvn, joints two to four of an- 

 tennae, apices of the other short ones, and a space before the apex, 

 light yellow, plumosity brown, changing into whitish at the apices; 

 thorax black, opaque, gray pruinose, mesonotum marked with 

 three indistinct dark vittae, the middle one divided by a median 

 black line prolonged to the seutellum, the latter light yellow; 

 the abdomen pale yellowish, first segment with two brown vittae, 

 the others with a black fascia before the middle of each, hairs of 



