Aphiochaeta. 221 



26. Costal cilia uniisually long 27. 



— Costal cilia of ordinary length or shorter 28. 



27. Larger species, 1,6 — 2 mm; fork long with the 



angle acute 57. indifferens Lundbk. 



— Small species, 1 — 1,2 mm; fork ordinary, angle 



somewhat large 58. consimilis Lundbk. 



28. Hind femora in male with dense, somewhat long 

 hairs below the basal part; costa reaching near 



to the middle (only male known) 60. modesta n. sp. 



— Hind femora in male with short or with sparse 



longish hairs below; costa generally shorter 29. 



29. Hypopygium with numerous, at the apex curved 



hairs along the lower margin (only male known) . . . frichorrhoea Schmitz. 



— Hypopygium not such haired 30. 



30. Frons nearly quadratic ; costal cilia rather short ; 



hypopygium large, rather hairy 61. proxima Lundbk. 



— Frons somewhat broader than long; costal cilia 

 of ordinary length; hypopygium small, less 



hairy 62. dtihiosa Lundbk. 



31. Palpi black 32. 



— Palpi yellow 33. 



32. Wings brownish tinged, proportions of 2 and 3 

 as 5—2; hind femora in male below basal lialf 

 with a fringe of somewhat short, but dense and 



strong bristles 63. sepulchralis Lundbk. 



— Wings not tinged, proportions of 2 and 3 as 3— 2 ; 

 hind femora in male with a dense brush of hairs 



below at the very base (only male known) clara Schmitz. 



33. 1 about double 2 ; hind tibial bristles small, hind 

 femora in male without fringe at base below, 

 but with the hairs at apex long (only male 



known) harhulata Wood. 



— 1 about equal to 2; hind tibial bristles large, 

 hind femora in male with a fringe of dense hairs 



at base below 64. Beckeri Wood. 



34. Costa not reaching to the middle, but distinctly 



shorter 35. 



— Costa reaching near to or generally beyond the 



middle 42. 



35. Frons about as high as broad 65. alti frons Wood. 



— Frons broader than high 36. 



36. 1 not twice as long as 2 and not or almost not 



longer than 2 + 3 37. 



— 1 twice as long as 2 or more and longer than 



2+3 41. 



37. Palpi blackish or brown; hypopygium higher 

 than long with one strong bristle on eaeh side 

 below; front tarsi in male with second to 



