FAMILY PSILID.T: 



375 



KEY TO GENERA 



1. Third antennal segment shorter than the arista 2 



Third antennal segment longer than the arista (4, 5)..Loxocera Meigen 



2. Pteropleura bare 3 



Pteropleura with hairs Strongylophthalmyia Heller 



3. A pair of dorsocentrals in front of the suture (1, 6). 



Pseudopsila Johnson 

 Only the prescutellar dorsocentrals present 4 



4. Cheeks almost half as wide as the eye-height (3, 7) Psila Meigen 



Cheeks at most one-sixth as wide as the eye-height 5 



5. Arista pubescent (2. 8) Chyliza Fallen 



Arista long plumose (Tropical) (Text figure) Somatia Schiner 



Psilidae. — 1. Pseudopsila; 2, Chyliza; 3. Psila; 4, 

 laevis; 8, Chyliza. 



Loxocera ; 6, Pseudopsila; 7, Psila 



