412 Forty- SIXTH Report on the State Museum 

 Siphon ophora rudbeckise {Fitch). Aphis rudbeckice Fitch. 



Rhopalosiphuni Koch. 

 Rhopalosiphum {Fitch). Aphis herheridis Fitch. 



Myzus Pass. 

 Myzus cerasi (Fabr.). Aphis cerasi Fabr. Fitch, 



Aphis Linn. 

 Aphis brassicse Linn. 



Aphis cornifolise Fitch. Types (nearly destroyed) in U. S. N. M. 



Aphis crataegifolise Fitch. Types (nearly destroyed) in U. S. N. M. 



Aphis cerasicolens Fitch. 



Aphis mali Fabr. 



Aphis malifoliae Fitch. 



Aphis pinicolens Ftch. Tj^pe (without abdomen) in U. S. N. M. 



Aphis sambucifoli^e Fitch. Type in U. S. N. M. 



Subfamily Callipterinse. 



Chaitophorus Koch. 



Chaitophorus aceris {Linn.). Aphis aceris Linn. Fitch. 

 Chaitophorus populifolise {Fitch). Aphis 2^opulifolia3 Fitch. 

 Chaitophorus populi {Linn.). L^achnus populi Linn. Fitch. 



Callipterus Koch. 

 Callipterus betulsecolens {Fitch). Aphis betulmcolens Fitch. 



Subfamily Lachnin?e. 



Lachnus Uliger. 



Lachnus abietis Fitch. Types (nearly destroyed) in U. S. N. M. 

 Lachnus alnifolise Fitch. Types (nearly destroyed) in U. S. N. M, 

 Lachnus quercifolise Fitch. Types (nearly destroyed) in U. S. N. M. 

 Lachnus salicellis Fitch. 

 Lachnus strobi (Fitch). Friosoma sirobi Fitch. Types in U. S. N. M. 



Subfamily Schizoneurinae. 



Schizoneicra Hartig. 



Schizoneiira imbricator {Fitch). Friosoma imbricator Fitch. 

 Schizoneura ulmi {Linn.). Lachnus ulmi Linn. Fitch. Specimens 

 in U. S. N. M. 



Schizoneura lanigera (Ifausin.). A2)his lanigera Haiism. 



IIorma2)hls O. S. 



Hormaphis hamamelidis {Fitch). Brysocripta hamamelidis Fitch. 

 Type in U. S. N. M. 



