CECIDOMYIA. 75 



d. Thorax not gibbous. 



e. Cubital vein joining the costal in front of the tip of the 

 wing. Subgen. Dasineura, Eondani, Ann. Sci. Nat. Bo- 

 logna, 1847. Cecidomyia, Loew, Winn. 

 f. Joints of the antennae petiolated in the male, sessile in 

 the female. 



g. Body black, or brown. 

 h. Head black, or brown. 



i. Legs with silvery reflections. 

 j. Wings grey. Species 1, 2. 

 jj. Wings white. Species 3. 

 j j j- Wings limpid. Species 4. 

 i i. Legs not silvery. 

 j. Face yellowish- white. Species 5. 

 j j. Face tawny. Species 6-8. 

 j j j. Face ferruginous. Species 9. 

 j j j j. Face brownish-tawny, brown, or black. 

 k. Body with tufts of silvery hairs. Species 



10-13. 

 k k. Body without silvery hairs. 



I. Wings slightly brown. Species 14, 15. 



I 1. Wings grey. Species 16. 



III. Wings slightly grey. Species 17, 18. 

 llll. Wings limpid. Species 19-23. 



h. Head yellow. Species 24. 

 g g. Body pale. 



h. Disc of the thorax brown. Species 25-28. 

 h h. Thorax with three brown stripes. Species 29, 30. 

 h h h. Thorax wholly pale. Species 31-34. 

 //. Joints of the antennas petiolated in both sexes, in the 



female often only partly petiolated. Species 35-39. 

 fff. Joints of the antennas sessile in both sexes. Species 



40-43. 



e e. Cubital vein joining the costal at the tip of the wing or 

 behind it. Subgen. Diplosis, Loew ; Winn. Phytophaga 

 et Cecidomyia, Ilondani. 



f. Antennae more or less moniliform ; joints generally pe- 

 tiolated and verticillate-pilose. 



g. Cubital vein joining the costal at the tip of the wing. 

 h. Joints of the flagellum alternately single and double. 

 i. Wings unspotted. 

 j. Body black, or brown. 



It. Scutellum tawny. Species 44, 45. 

 k k. Scutellum not tawny. Species 46, 47. 

 j j. Body yellowish-brown. Species 48. 

 j j j. Body yellow, or testaceous. 



k. Wings slightly greyish. Species 49, 50. 



