1913] Atciaiidci—Ncw Neotropical Aiilocliuti 41 



Ml fused Willi Cu lo the tip, obliterating cell Mi; basal dcUection 

 of Ciii retreated fur toward the base of the wing. (X. and S. 



Amer.) Diolrepha Osten Sackcn 



9. Ri very short, ending before the middle of the wing, the sector orig- 

 inating near its tip. (Australasia to Africa) Styringomyia Loew. 



Ri ending beyond the middle of the length of the wing, the sector 



remote from the tip 10 



10. Radial cross- vein present 11 



Radial cross- vein absent 12 



11. Rs very long, straight, but diverging from Ri; basal deflection of 



Ri+s twice as long as cross-vein r-m; basal deflection of Cui before 

 the fork of M ; radial cross-vein usually in a direct line with r-m ; 

 anal angle of the wing very prominent. (Eur.; N. Amer.) 



Anlocha Osten Sackcn 

 Rs shorter, more arcuated; basal deflection of R(.,.» about as long as 

 r-m; basal deflection of Cui at, or beyond, the fork of M; radial 

 cross-vein usually slightly distad of the level of T-m\ anal angle of 

 the wing feeble. (N. and S. Am.; Asia; Australia) 



Teucholahis Osten Sacken 



12. Rs short, not much more than twice as long as the dcflccticm of R<.. i; cell 



Ri broader at base than at tip (Alarba) or else Rs gently arcuate<l 

 and the veins issuing from cell 1st Mi twice as long as that cell 



{Dicranoplycha) 13 



Rs long, and very straight, close to Ri lea\'ing cell Ri extremely 

 narrow; deflection of R<+« very short, almost perpendicular to Rs 

 at its origin; cross-vein m present in New World species. (Eur.; 

 X. Amer.) FAlipltra Schincr. 



13. Rs originating opposite to the end of Sc; cell 1st M: short, almost 



as broad as long. (Eastern U. S.) Alarba Osten Sacken 



Rs originating far before the end of Sc; cell 1st M: elongate, 

 twice as long as broad. (Eur.; X. Am.; .\frica; East Ind.) 



Dicranoplycha Osten Sacken 



Ellipteroldes Becker-, erected in 1907 for the new species, piceus, 

 is almo-st certainly Eriopterine. The presence of <i cell R2 is a tribal 

 character, not generic as considered by Becker. But one genus, 

 Paratropcza Scliin., occurs in the Antochine series that possesses 

 cell R2, but this genus, in all other respects is a true member of that 

 series. Ellipteroides is not, but seems, rather, to be a generalized 

 form allied to Gonoviyia. It is not at all related to Elliptera 

 Schin., as Becker states, and this reference was probably made 

 chiefly on the lack of cell 1st Mj (discal), a very unimportant 



'EUipleroides, Becker is omitted; see discussion at the end of this key. 

 ' Becker, T. Die Ergebniiise mcincr Dipterologischen FrOhjahr-rcise nach Algier un 

 Tunis 1906. (Zeitschr. tQr Syst. Hymenopt. und Diptciol.; vol. 7, p. 239; figure) (1907). 



