102 



NORTH AMERICAN DIPTERA 



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Cecidomyidas I. — 1, Lasioptera; 2, Porricondyla? ; 3, Cecidomyia; 4, Hor- 

 momyia; 5, Trichopteromyia; 6, Lestremia; 7, Miastor; 8, Spaniocera?; 9, 

 Catocha; 10, Colpodia; 11, Heteropeza; 12, Asynapta; 13, Winnertzia; 14, 

 Lestodiplosis; 15, Winnertzia. 



