THE CANADIAN ENTOMOLOGIST 



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Fig. 0. — Antennse of apterous viviparous female Apple Aphides. A, Aphis kochii Schonteden. 



I), A. s(whi Kaltenb. C, A. pomi De G. D, -4. craticgi Kaltenb. E, A. oxyacanlhse 



i =nigra nov. nom.) Koch. F and G, Siphocoryne avenje Fabr., 



Isl and 2nd series. 



••1 '^ '' 



IJU 7. — Males of Apple Aphides. A, Male Aphis pomi: a, cornicle. B, Male A. kochii: 

 b, cornicle. C, Male Siphocoryne iivenx: c, cornicle. 



