157 
161 
Figures 155-163. — Hexomyza schineri : 155, Aedeagus, 
side view; 156, same, ventral view; 157, galls on 
Salix sp.; 158, posterior spiracles of puparium. 
Ophiomyia maculata ; 159, Aedeagus, side view; 160, 
same, ventral view (holotype) ; 0. banf fensis : 161, 
Head; 162, aedeagus, side view; 163, same, ventral 
view (holotype, Canada). 
354 
