130 IIYOICIII TAlCUi.VSUI: 



iu many otbor Ai)hulinivo and arc sciuty iu uunilxjrs. 



Near Tailii)ku, as mentioned al)ov(>, this apliis is viviparons throngliout the 

 Vf^av, but I lukve obsorvod one winged oviparous ftjmale on ^[;iy 30, 1920, 

 wbioli occnjTenco st-enis to be abnormal. 



Every soxnpara may give birth to both tlio sexuales and tlie wingless 

 viviparous females. 



(Intermodiat(> ) 



Tlio bracliypterous vi\ip:irons females are very rar(\ The eyes of the 

 ^\iIlgless form usually consist of only thre<? fiwets, but intcrmediatt^s often occur, 

 in winch those consist of more than three fawts. Tlie word " immediate " on 

 the pages 75 and 78 of the " Aphididae of Formosa — 1" is a lapsus of 

 '• intermediate." 



( Ilabit I 



This aphis is ([iiite inactive and sometimes groups den.s<;ly, directing the 

 heal downwards, and do(>s not dn)]! to tlu^ gi'ound nor elevate the posterior 

 pair of legs when disturlx)d. The jumping habit has not been observed. 



(Distribution) 



Ja]i.in : Tokyo, Cliiba. 



Formosa: Tailioku. 



Shivaphis celticolens (Fssig et Kuw.) 



(Host plant) 



Cdiis siiwmis : the lower surfaces of the leaves, esixicially tlu^vounger ones, 

 are ntticked. 



(Stvison when tlie sjxx'ies is connnou) 



Nt-ar Tokyo this aphis may bo seen very commonly from about the 

 beginning of .Tune to the middle of October, during which ix>riotl it is oc- 

 casionally abnnd-mt. 



(Winged vivijiarous female) 



The females of the fii-st generation are probably wiiigle^>, but those of 

 <'ach of the sc^cond and the subscYjuent generations are \\ing(Hl or wingless. 

 -Vmong tlu> winge<l f:)rms many bracln'pterous individuals are fjund in any 

 month from June to October as in MyzocaUis I'ltricola (Mjvts.) 



