FAMILY PHORID.E 239 



21. Anterior orbital bristle present Woodiphora Schmitz 



At least the anterior orbital bristle absent 22 



22. All the bristles on the anterior half of the front missing (23). 



Gymnophora Macquart 

 Median frontals present Metopina Macquart 



23. Supra-antennals entirely missing 24 



At least one pair of supra-antennals 26 



24. Arista apical or subapical 25 



Arista dorsal Cremersia Schmitz 



25. Hypopygium large; anal segment laterally compressed, the outline 



lancet-shaped; fifth sternite with long apical hairs. 



Neodohrniphora Malloch 

 Hypopygium small, the anal segment long and linear; ovipositor of 

 female chitinized and projecting Apocephalus Coquillett 



26. Front with four rows of bristles 27 



Bristling of the front incomplete; arista apical. 



Acanthophorides Borgmeier 



27. Upper pair of post-antennal bristles erect, directed more or less out- 



ward 28 



Upper pair of post-antennals proclinate or reclinate, not directed out- 

 ward 29 



28. Upper post-antennals distinctly proclinate and directed a little out- 



ward Pseudohypocera Malloch 



Upper post-antennals directed outward (7) Apocephalus Coquillett 



29. Weak vein beyond the third vein weak or absent Syneura Brues 



This vein distinct 30 



30. Epistoma strongly produced, tube-like Trophithauma Schmitz 



Face normal, not produced 31 



31. Proboscis very long and thin (o unknown) Rhyncophoromyia Malloch 



Proboscis normal (Phalocrotophora Enderlein) (2, 5). . .Megaselia Rondani 



32. Bristling of the front complete (as in Megaselia) or with additional 



bristles 33 



Bristling incomplete, the anterior orbital or other bristles absent 37 



33. Front with additional bristles on the median area. 



Pseudacteon Coquillett 

 Front with normal number of bristles 34 



34. The weak vein lying parallel with the costa absent or indistinct 35 



This vein distinct (2, 5) Megaselia Rondani 



35. Costa short, widened and almost filling the costal cell. 



Parametopina Borgmeier 

 Costa short but not abnormally widened 36 



36. Apices of first and third veins approximate Syneura Brues 



Apices of first and third veins not approximated (10). 



Plastophora Brues 



