1275 
1276 
1281 
1282 
1277 
Figures 1271-1282. — Chromatomyia erigerontophaga : 
1271, Head; 1272, aedeagus, side view; 1273, same, 
ventral view (holotype, Greenland); 1274, sperm 
pump (Alberta, after Griffiths); C. nigrella : 1275, 
Aedeagus, side view; 1276, supporting sclerites, 
dorsal view; 1277, sperm pump. Phytomyza 
melanella : 1278, Aedeagus, side view (holotype). 
C. poae : 1279, Aedeagus, side view; 1280, sperm 
pump (Colorado). P. vomitoriae : 1281, Aedeagus, 
side view; 1282, distiphallus , ventral view. 
457 
