96 KY(JICIII TAKAIIASIH: 



(Mide aud opiparuus foiuale) 



The sexualc? luivo uevor bceu observed near TaiLukii, Ix'iug vi\iparou3 

 tlu-oiiji;hoiit tLo yo:a: 

 (Distribution) 



Formosa : Taiiioku, Kiirim, Urai, Sliiuteu, Giraii, Sliiiichikii, Kwaiisliirei. 

 Japiu : Tok3o, etc. 



Aphis smilacifoliae Takab. 



(Plost pkaut) 



Sniilax chmcasis : thj kjwer surf ice of the leav&s, along tlie luiilribs, aud 

 tbe joung stiilks are attacked. 



(Season wben tbe insect is abundant) 



Near Tokyo tbis apbiss is rather common from June onwards throughout 

 the summer, sometimes occurring in largo numbei-s. Near Taiboku it may be 

 obsen-ed in large numbers at almost any season. 



(Winged viviparous female) 



The winged forms are very common at almost any season in Formosa. 

 Near Tokyo they are also very common in the second aud subsecpiout 

 generations. 



(Male aud oviparous female) 



The sexules are not produced near Taihoku, being vivipannis throughout 

 the year, \\hile near Tokyo the winged males and wingless oviimrous females 

 occur from the first week of November on. Thi^ oviparous females outuumber 

 the males as is common with many other Aphitlidaj, and the sexupiira) seem 

 to be always wiugliss. 



(Notes on the life history near Tokyo) 



Tlie eggs hatch about the middle of April. Tlie fii-st generation (stem- 

 mother), the adults of which appear iu the firet week of May, consists entiiely 

 of wingless forn.s, but the second and the subsequent generations contain both 

 winged tmd wingless forms. The adults of the second generation occm* fi'om 

 about the 20th day of Ma}- on. The eggs, when newly produced, are yellow, 

 and are deiJositeil upm the basal parts of tbe stalks. 



(Habit) 



