Explanation of plates 

 Plate I. 



A 

 Macrosiphum itoc n. sp. 

 (Wingless viviparous -^-) 



Fig. 1 Head. 



Fig. 2 Cornicle. 



Figs. 3-4 Cauda, hairs being removed. 



(Winged viviparous -^-) 

 Fig. 5 Cornicle. 



Myzus montanus n. sp. 

 Fig. <j Cornicle of young nymph. 



Myzus species on Malus formosanus. 

 (Wingless viviparous -^-) 



Figs. 7-8 Cornicle. 



Fig. 9 Inner side of frontal tubercle 



Myzus sakurae Mats. ? 

 (Wingless viviparous ■$-) 

 Figs. 10-11 Cornicle. 



B 



Macrosiphum rosaefolium Theob. 

 (Wingless viviparous ■%-) 



Fig. 1 Frontal tubercles. 



Fig. 2 Cornicle. 



Myzus sakurae Mats. ? 



(Wingless viviparous JjL) 



Fig. .'] Head. 



(Winged viviparous -2.) 



Fig. 4 Head. 



Fig. 5 Cornicle. 



Myzus montanus n. sp. 



