100 RVOirni TAKAIIASFII : 



(8e;isou wheu the iii3ot:t is comiuoii) 



The siiecios is cjiumou at almost any time. 



(^^'ingc(l viviparous feuuilo) 



Tlio winged forms are veiy common at any season like those of maii.>- 

 oilier si)ec'ies of Apltis. 



(Male and o\iparons female) 



It is contimi )usl^- \-iviparoiis throughout the year near Taihoku, where no 

 sexes have been I'ouud. 



(Intermediate) 



No intermediates have been noticed. 



(Distribution) 



Formosa : Tiiihokn, Kiinin, Shinten, Cliran, Toyeu, Shiuchika. 



13. Oljservations near Tokyo. 



(Host plants) 



Clcrodeiidron Irivholoiiium : the aphis may be seen on this plant fi'om 

 Ajivil to the beginning of November, but is very rare during the summer. 



Gucmnis s itivus : tlu! aphis is ])reseiit on this jilant fi'om alwut the 

 middle of June to about tlie •20tli day of July, doing serious damage tj the 

 leaves. 



(Notes on tlie life history on the Glerodeudrou) 



The eggs hat<'h about the middle of April, when the buds of the host are 

 begiiming t > o])on. The adults of the first generation (stem-nj(ithers), ap^x^ariug 

 near the end of tho same month, are entirely wingless. The second geueiation 

 consists of both winged and wingless forms, the adults of wliicih make tlieir 

 appearance a1)out the 20th day of May, when the great.'st alumdance on this 

 plant occurs, llie third and the subseipieut ge;:erations include idso b.'th 

 winged and wingless forms, but the ^exuparae are entirely winged. 



During the sumnior its numbers on this plant are reduced. The winged 

 males and ^\ingles3 oviparous feuiales are produced fi'om the last c>f Octolier 

 on. 



All the individuals of tiie first and second gener.'itions are dark green in 

 colom', but some of those of the third and the following generations are 

 yellowish. 



(DLstiibntion) 



