r ' ■ 1 - : ■ " • • ^ : ■ ". r 



386 NEW EASTERN ANTHOMYIIDAE 



abdomen often with four to eight spots; caudal margin of the fifth ventral 

 sclerite of the male deeply notched on the median line usually to beyond the 

 middle; the fulcrum of the hypopygium produced caudad . . .Coenosinae 

 AA. Sternopleurak, if three are present, arranged in the order 1:2 in a right 

 triangle (except in Lispocephala, Limnospila, and Dialyta) ; eyes of the male 

 usually more or less approximate, often contiguous; anal vein sometimes 

 produced to the margin (in the Anthomyiinae) ; wings often rilled; caudal 

 margin of the fifth ventral sclerite of the male usually with a shallow median 

 notch, in some genera deeply two or three notched; fulcrum of the hypopygium 

 produced cephalad (except in Euryomma, Limnospila and Coenosites). 



B. Underside of the scutellum more or less sparsely covered with fine hairs; 

 anal vein (with very rare exceptions) produced to the. margin of the wing; 

 squamae often small and equal, and not contiguous at the base. 



Anthomyiinae 

 BB. Underside of the scutellum bare; anal vein does not reach the margin of 

 the wing. , i > 



C. First anal vein short, second anal suddenly flexed upwards; sterno^ 

 pleurals often arranged in the order 1 :1 ; posterior extensor surfa,ce of the 



hind tibiae with one or two setae Fanninae 



CC. Anal veins parallel or divergent. 



D. Seta on the posterior median extensor surface of the hind tibiae 

 absent (except in the exotic Limnaricia and Coenosites, in which the 

 anterior supra-alar seta ("pra" of Stein) of both sexes and the cruciate 

 petae on the front of the female are Wanting, the former genus with 

 6, the latter with 7 pairs of d. c). 



E. Thorax with an uneven number of dark stripes, or unmarked; 

 scutellum with only the larger basal and subapical setae; face and 

 oral margin usually produced; R4+6 and M1+2 parallel or slightly 

 convergent, more rarely divergent; no cruciate setae on the front of 

 the female; "pra" minute or wanting; usually sparsely and short- 

 setose species Limnophorinae 



EE. Thorax with an even number of dark stripes or rarejy unmarked; 



scutellum with stout discal, prebasal and preapical setae in addition 



to the basals and subapicals (except in the exotic ^noplopteryx and 



Linmarida): face usually vertical, rarely produced; R4+5 and Mi+j 



usually diverging or parallel; cruciate frontals usually absent; 



"pra" often present; usually strongly setose species. . . .Mydaeinae 



DD. One (rarely more) seta on the posterior median extensor surface of 



the hind tibiae present; the cruciate frontal setae in the female and the 



anterior supra-alar bristle (pra) not simultaneously wanting, except in 



Dialyla in which "pra" is very small and may be absent, and in Tri- 



chopticus in which the eyes are hairy Aricinae 



Coenosinae 



The genera Schoenomyza, Hoplogaster, Phyllogaster and Coenosia 

 are represented in New York State. 



