02 KYOK HI TAK.UIASUI: 



(Coiiimuual life) 



This species is occasionally foimd iu gi-oups with 3Ljzus persicce (Sulz.) 

 Not attended by ants. 

 (Distribution) 



Formosa: TaiLokn, Sozau, Bokusaku, Boko-island. 

 Japan : 'J okyo. 

 I liavi! never collected Brcv'worijnc bnissicce (L.) iu our island. 



Rhopalosiplium lahorensis (T)as) 



Tliis species is ratlier rai'e. 



Ademlsia vulgaris var. indicn : winged and wingless vi\-iparons females 

 were obson-ed on the lower side of the leaves on Msixch 13, and October 15, 

 1921, near Taihoku. 



SiiyjcslccJcia orientaUs : some viviparous ones wa'e found on March 15, 

 1921, ne;ir Taihoku. 



Rhopalosiphum avenae (Fab.) 



syu. To.co])tc.ra ruJiahdoiaiiiaUs Sasaki 

 Yamataphis rujialdoininalw Mats. 

 1'. oryr.(B Mats. 



Ehopalosipliian papaveris Takah. 

 Yamataphis papaveris Takah. 

 (Host plants) 



Papiver somnifcrum : this aphis occurs iu ouomorous numbers on the 

 rix)ts during December and January, proJucing a heavy and conspicuous 

 infestation, at Toyohara, Formosa. Numerous winged and wingless \-iviparous 

 fem.ales were obseiTed ou the leaves and stalks in March, 1918, at Kagi, 

 Formosa. 



Prumis mnrne. : numerous winged and a few wingless vi\-iparous females 

 were obsei-ved ou the leaves on April 19, 1922, at Shinchiku, Formosa. 



Orijza saliva : the roots are attacked in Japan. I have uover obsen'txl 

 the species on this plant iu Fornios.a. 



