APniDIDJE OF FOKirOS.V. 



1-29 



mther iuactive, aud does not jump from the host, uor move tlio posterior ]);iir 

 of leg3, when disturbed. 



(Distribution) 



Formosa : T;iihoku, Shiuteu, Knaushirei. 



Neophyllaphis podocarpi Takah. 



(Host plauts) 



rodocarpvs macroplijiVa : the lo^\•er surface of the leaves, esfx-ciallj the 

 jxiuDger ones, is attacked. 



PoJocarpus nafjein, .- the lower suiface of the young lea\"es is attacked 

 and the infested lea^"es are somewhat curled. 



(Season when the insect is abundant) 



Near Tokyo tho viviparoiLS females are very common from Ma}' until tin; 

 middle of November, occasionally occurring in large numbers. 



Near Taihoku they are also very common throughout the .year, occasionally 

 being abundant at any season. 



(Winged viviiDarous female) 



Near Taihoku, as well as near Tokyo, the winged fjrms makti their 

 appearance almost in every viviparous generation, but they are not as coimuon 

 as the wingless forms. 



The females of the first generation (the stx-m-mothers) and the sexup.irae 

 always seem to lie apteious. 



(Male and oviparous female) 



Tlie oviparous females of almost all the x\phidiuae are wingless, but those 

 of the present s]^)ecies are always x^rovided with well develoi^ed ^^■ings. Winged 

 oviparous females have also been observed, as already mentioned, liu Grcenideu 

 and Cervoplds. 



Tliis aphis also differs fr"om most Aphidinae in that the sexuales appear 

 from about Ma}' until the Last of November, during which period both the 

 vi^•i parous and oviparous females ma}' be seen on a single host tree. Tliis 

 occurrence of the sexuales has been observed only near Tokj'o, nut in Ftn-mosa 

 where the species is continuously viviparous throughout tho year, without 

 producing the sexes, except as mentioned below. The males are winged as 



