Xo. 64] DIPTERA OF COXXECTICUT : TAXONOMY 425 



6. Wings with Sc long, Scr ending beyond origin of Rs ; m-cu bevond iork 



of M (Fig. 47, E) • .Teucholabis 



Wnigs with Sc short, Sci ending before origin of Rs ; m-cii at or before 



fork of il/ (Fig. 47, F, G) Gonomyia (part) 



/. Wings with vein Rs shorter than the petiole of cell /?•,, cell R-^ short CFii? 



47, H-M : Fig. 50, B, C) ."..... . . . . .' g 



Wings with vein Rs longer than the petiole of cell R-^, cell R3 ions (Fie 

 47, N : Fig. 50. A, D-L) 11 



8. Vein R, present (Fig. 47, M ; Fig. 50, E, C). (Erioptcraria) ..'.'.'. 9 



Vein R, lacking (Fig. 47, H-L) ;; jO 



9. /?.? elongate, exceeding distal section of Muz (Fig. 47, M) ; tuberciilate 



pits on cephalic portion of praescutum ; trochanters elongate 



Rhabdomastix (part) 

 Rs shorter, less than the distal section of jV/1+2 (Fig. 50, B, C) ; tuberculate 

 pits removed from cephalic margin of praescutum, nearly in transverse 

 alignment with the pseudosutural f oveae ; trochanters short Erioptera (part) 



10. Sc long, Sci extending from opposite midlength to just before the fork of 



Rs: m-cti at or beyond the fork of M (Fig. 47, L) ( Eriopteraria ) 



Rhabdomastix (part) 

 Sc short, not extending beyond midlength of Rs (Fig. 47, H, J, K) ; if .SV 

 is relatively long, m-cu lies more than its own length before fork of M 

 (Fig. 47, I) (Gonomyaria) Gonomyia (part) 



11. Wings with distinct macrotrichia in outer cells (Fig. 50, I-K) 12 



Wings with the outer cells glabrous (Fig. 50, A-H) 15 



12. Rs shortened, its union with i?2+?+4 forming an angle, so cell 7?i is nearly 



equilateral in outline (Fig. 50, I) (Eriopteraria) Cryptolabis 



Rs long, normal in position; cell Ri elongate (Fig. 50, J, K) 13 



13. Size very small (wing, 2.6 mm. or less) ; Rs ending in cell Rx, this cell 



being sessile, without element Rz+s+i (Fig. 50, K) (Eriopteraria) 



Tasiocera (Dasymolophilus) 

 Size larger (wing 4 mm. or over) ; Rs ending in cell A'.i, cell R.^ being 

 petiolate by the presence of a distinct element R-2*s+i (Fig. 50, J) 14 



14. Sc2 close to tip of Sci, the two veins thus subequal in length (Gonomy- 



aria) Gnophomyla (part) 



Sc2 far removed from tip of Sci, the latter vein long, subequal in length to 



Rs (Fig. 50, J) (Eriopteraria) Ormosia i/<.2L 



15. Rs ending in cell Rs, therq being no element 7^2+3+4 (Fig. 50, L) (Eriop- 



teraria) Molophilus *'/'£' 



Rs ending in cell Ri, cell Rs being petiolate bv a distinct element R^^iui 

 (Fig. 47, C, D, N ; Fig. 50, A, D-H) If^ 



16. A supernumerarv crossvein in cell Rs] vein 2nd A strongly sinuate (Fig. 



47, N) (Eriopteraria) Symplecta 



No supernumerary crossvein in cell Rs; vein 2iid A straight or only weakly 

 sinuate (Fig. 50, D-H) 17 



17. Coxae of middle and hind legs only slightly separated by the small meral 



region ;■ Sci relatively short, not exceeding one-fourth the length of Rs 



(Fig. 47, C, D) (Gonomyaria) :••;, ^8 



Coxae of middle and hind legs widely separated by a large "pot-bellied" 

 meral region; Sci very long, exceeding one-half of Rs (Fig. 50. A. D- 

 H) (Eriopteraria) 



18 Wings with ni-cu some distance beyond the fork of M ; R^,2 long, more 



than three times R. and exceeding Ruu^ (Fig. 47, C) ..Gnophomyia (part) 

 Wings with m-cu at or close to fork of M ; Ru^. short, subequal to Ae 

 and less than one-half i?..3.. (Fig. 47, D) Lipsothnx 



19 Vein Cui nearly straight, the distal section not swinging cephalad toward 



wing-tip ; cell 1st M2 present, small, less than one-half the distal section of 



Mi,2 (Fie-. 50, A, .E) J ■■•••■■■;•■ ■ 



Vein C«i with distal section slightly deflected at apex toward ^'"^^'Pi 

 cell 1st /v/o, when present, elongate, subequal to or longer than tlic distal 

 section of Mu. (Fig. 50, G. H) Enoptera (part) 



