FAMILY BOMBYLIID.K THE BEE FLIES 197 



31. Two submargina] cells 36 



Three submarginal cells 32 



32. Abdomen very elongate, slender and almost bare; tibiae without spicules 



(50, 53) Amphicosmus Coquillett 



Abdomen robust and short; pilose species; tibiae with spicules 33 



33. Antennae as long as the head, the third segment not longer than the 



basal two together 34 



AntennEe shorter than the head, the third segment twice as long as 

 the basal two combined Exepacmus Coquillett 



34. Scutellum deeply sulcate longitudinally (38) Geminaria Coquillett 



Scutellum not sulcate 35 



35. First antennal segment greatly swollen (Picas Latreille) (60). 



Conophorus Meigen 

 First antennal segment not thickened (13, 14) Lordotus Lcew 



36. Anal cell closed 37 



Anal cell open 41 



37. Proboscis projecting beyond the anterior oral margin 39 



Proboscis short, not projecting beyond the anterior oral margin 38 



38. Abdomen elongate and tapering Caenotus Cole 



Abdomen short and broad, thickly pilose (35) . . . .Ogcodocera Macquart 



39. Tlie intercallary vein between the fourth and fifth vein arises from the 



discal cell 40 



The intercallary vein arises from the fourth vein (42 Empidse 5, 10). 



Prorates Melander 



40. Face bare or short pilose; third antennal segment bare or wdth short, 



bristly hairs above (15, 16) Phthiria Meigen 



Face with long hair; third antennal segment with long, bristly hairs. 



Neacreotrichus Cockerell 



41. The second vein ends in the first vein 42 



The second vein ends in the costa 43 



42. Discal and second basal cells united (33) (Pachyneres Greene). 



Glabellula Bezzi 

 Discal and second basal cells separated (25, 26, 46). 



Mythicomyia Coquillett 



43. Body clothed chiefly with scales 43a 



Body clothed with hair or nearly bare, sometimes with some scales.. 44 



43a. First antennal segment at least as long as the third, densely clothed 



with scales; abdomen elongate (45, 48) *Lepidophora Westw^ood 



First antennal segment not half as long as the third, without scales; 

 abdorrlen short Neodischistus Painter 



44. First basal cell much longer than the second 46 



First basal cell only slightly longer than the second 45 



45. First antennal segment greatly swollen, widest apically (30). 



Calopelta Green 

 First antennal segment only a little swollen, widest in the middle. 



Sparnopolius Lcew 



* Painter. 1925. Tr. Amer. Ent. Soc, li. p. 120. 



