FA.MILY OTITID.i: — THE PICTURED-WING FLIES 277 



24. Eyes conspicuously higher than long, the face gently concave above 



(35, 67) Paroedopa Coquillett 



Eyes about as long as high, the face not concave above (20, 69). 



CEdopa Loew 



25. Head not or scarcely longer than high 26 



Head nearly twice as long as high (13, 18) Eumetopiella Hendel 



2G. Third antennal segment with the apex rounded above 27 



Third antennal segment with the apex angulate above 32 



27. Anterior crossvein situated near or beyond the middle of the discal 



cell 28 



Anterior crossvein situated near the basal sixth of the discal cell 

 ( 44, 82 ) Axiologina Hendel 



28. Mesopleura bare; two sternopleurals (84, 102) Seioptera Kirby 



Mesopleura haired; one sternopleural 29 



29. Frontal vitta with hairs or bristles 30 



Frontal vitta bare (27, 46) *Chrysomyza Fallen 



30. Prescutellar acrosticals absent Zacompsia Coquillett 



Prescutellar acrosticals present 31 



31. Bristles arising from black spots (29) Euphara Loew 



Frontals not arising from conspicuous black spots (64, 85).tEuxesta Loew 



32. Frontal vitta with at most two pairs of cruciate bristles or the face 



strongly receding 33 



Frontal vitta with hairs or several bristles (64, 85) Euxesta Loew 



33. Face strongly receding (43, 104) Stenomyia Loew 



Face perpendicular below (9, 83) Chaetopsis Loew 



34. Costa fractured or greatly weakened at the end of the auxiliary vein. . 35 

 Costa entire 36 



35. Abdomen petiolate (32, 72) Setellia Desvoidy 



Abdomen oval, not narrowed sub-basally Epiplatea Loew 



36. Propleural bristle weak or absent 37 



Propleural bristle strong 59 



37. Three supra-alar bristles 38 



Four supra-alar bristles Family Tanypezidse 



38. Subcostal (stigmatal) cell usually extremely large; antennal grooves 



absent (Pterocallinae) 39 



Subcostal cell usually normal; antennal grooves well developed, often 

 deep (Platystominse auct.) 48 



39. Posterior crossvein more or less recurrent, never forming a sharp 



angle with the fourth vein 40 



Posterior crossvein not recuri-ent, forming less than a right angle with 

 the fourth vein 43 



40. Anterior crossvein situated beyond the middle of the discal cell 41 



Anterior crossvein situated before the middle of the discal cell (58). 



Megalaemyia Hendel 



' Hendel, 1909, Zool. Anz.?iger, xxxiv, pp. 612-622. 

 t Hendel, 1909, Ann. Mus. Nat. Hung., ix, p. 151. 



