MAY FLIKS AND MIDGES OF NEW YORK 91 



// Claws simple 



;■ Very small species ; black, including its legs, wings 

 and lialteres ; male with fourteen nearly bare joints, 

 female with seven joints; legs with woolly hairs; 

 metatarsi somewhat elongated ; claws distinct, 



pl.34, figs. 6-11 31. H y d r o b a e n u s 



jj Not snch flies 



Ic Antenna of male with eight joints ; female like 

 O r t h o c 1 a d i u s , ( Australia ) , pl.36, fig.26 



32. Doloplastus 

 kJc Antenna of male not eight jointed ; the female with 

 seven joints 

 I Wings very short, in the female scarcely reach- 

 ing the middle of the abdomen ; the abdomen 

 with a seta-like tubercle near the tip on each 

 side; fore tibia longer than the metatarsus 



(Spitzbergen) 33. S m i 1 1 i a 



II Wings of moderate length 



m Thorax prolonged and bent downward ; hal- 

 teres hammer-like, pi. 35, figs. 26, 27, 28 (Ar- 

 gentina ) . Synonym of C h i r o n o m u s ? 

 34. B u r m e i s t e r i a 

 mm Thorax highly arched; halteres with knob 



( Q*roiip G h i r 011 m u s ) 

 n The fourth tarsal joint obcordate, shorter 



than the fifth . /^'^- T h a 1 a s s o m y i a 

 [45. S c p e 1 o d r o m u s 

 mi Tarsal joint linear 

 Wings bare 



p Front metatarsi as long or longer than 



the tibiae 38. C h i r o n o m u s 



PIJ Front metatarsi distinctly shorter than 

 their tibiae 

 q Legs black and white annulate, at least 

 the fore pair . . .39. C r i c o t o p u s 

 qq Legs not so banded 



r Posterior branch of cubitus sinuous, 

 pi. 30, figs. 1 to 4 



40. Camptocladius 

 rr This branch sti'aight, gently arched, 

 pl.30, figs. 5 to 10 



41. O r t h o c 1 a d i u s 

 00 Wings hairy 



p Front metatarsi longer than their tibiae 

 42. T a n y t a r s u s 



