146 KYulLlU TAKAIlAsm: 



Foriuos.i: Tuihuku, Unii, KwuiLslurfi, Ileto, K;igi. 

 lk)k<)-i.sl;iuds, Ki >tu-isl:iii(1. 



Astegopteryx styracicola Tnkah. 



llcist pliiiit. — Slijro-.c fonnommuii ; pvoiluciiig very lurffo g:ilb. 



Noiir Tuiluikn tlie wiiigt'd fn-mH make their .ipiK^arauce in Januar\- to 

 luigi'ate to au unknown j)kiut, leaving tlio galls on the Shjrax. Not common 

 in Formosa. 



Astegopteryx uekoashi Sasaki. 



Host plant. — Slyri'x Jdjj'jniois ; producing galLs. 



Near T( )kyo the winged viviparous females make their appearance about the 

 10th day of July to migi'ate to an unknown plant leaving the galls on the Sli/riir. 

 A few winged forms may be seen in the galls as late as the middle of August. 

 Many \\inged viviparous females, which were probably the sexuparae, were 

 observed on the lower side of the leaves of Stijrax on October 18, 1918, near 

 Tokyo. This aphis is very common in the vicinity of Tokyo. 



Astegopteryx fici Takah. 



(Host pkiuts) 



Ficus rdus<t : the lower and upper surfaces of the leaves are attackel. 



F'lcus lulijld'uom : some wingless vinparons females were ol>5or\ed on the 

 leaves on March 21, 192!, at Koheki, Formosa. 



No galls are produced. 



(Season when the iuscx-t is common) 



Near Taihoku this aphis may be found very commonly on Flcus rdusa 

 at any season, occasionally occurring in great abundance, but its uuuibars are 

 usually conspicuously reducixl during the summer, when the aphis sometimes 

 ceases to produce young. 



(Winged viviparoas female) 



The winged forms are quite rare, ha\-ing been observed only on Jauurary 

 9, and 3Iavch .3 and 20, 1922, ue;ir Taihoku. 



(,Male and oviparous female) 



