621 
Figures 615-622. — Cerodontha ( Dizygomyza ) luctuosa : 
615, Third antennal segment; 616, aedeagus, side 
view (Colorado); 617, distiphallus , ventral view; 
618, posterior spiracles of larva; 619, puparium; 
C. (D. ) hirtae: 620, Distiphallus, ventral view. 
Liriomyza spp., stridulating mechanism in male; 
621, L. virgo "file"; 622, L. orbona , arrow 
indicates "scraper"; (621, 622, Europe, after 
Tschirnhaus, 1971; drawn from photographic 
originals) . 
399 
