Figures 817-830. — Liriomyza chemsaki : 817, Aedeagus, 
side view; 818, same, ventral view; L. tubula : 819, 
Aedeagus, side view; 820, same, ventral view; L. 
lathyri : 821, Aedeagus, side view; 822, distiphal- 
lus , ventral view; 823, leaf mine on Lathyrus sp. 
(Arkansas); L. endiviae : 824, Aedeagus, side view; 
825, same, ventral view; 826, sperm pump (same 
scale as aedeagus); 827, leaf mine on Lactuca 
serriola ; (824-827, Washington); L. taraxaci : 828, 
Aedeagus, side view (Germany); 829, distiphallus , 
ventral view (Ontario); 830, leaf mine on Taraxacum 
(Wisconsin) . 
415 
