895 
896 
900 
Figures 891-900. — Calycomyza humeralis : 891, Third 
antennal segment; 892, aedeagus, side view 
(Europe); 893, same, ventral view (California); C. 
solidaginis : 894, Aedeagus, side view; 895, 
distiphallus, ventral view (Canada); C. obscura : 
896, Aedeagus, side view; 897, distiphallus, 
ventral view; 898, epandrium with surstylus; £. 
gigantea : 899, Aedeagus, side view; 900, 
distiphallus, ventral view. 
422 
