120 llYOIt III TAKAIUSIII: 



(^luU' auil oviparous fciuiili') 



It is viviii;u\)U3 tliroiv^liout tlu^ yoav, not prodncLii^ st^xiial forms. 



(lutorinodinto) 



No iiitorinei.liati'S lia\o lutni I'lHiiul as in nitmy otliov six-cios of MijzociUis. 



It is sixiradic, dircx^ting tlie lioad downwards, and jumping from tho host 

 wlicn disturlnxl. Not attoudixl by ants as in m;xny other s^Jecies of Mif.ocaUis. 

 (DLstinbution) 

 Formasa : Tnihokn. 



Myzocallis querciformosanus Takah. 



Host phint — Qucrcus dmkiia. 



Many winged viviparous females \v(ne observed on the lower surface of 

 tlie leiivos ou March 2, 191'.), at Taichyu, Formosji. 



Myzocallis yokoyamii Takah. 



(Host pliiuts) 



Qucrcus (jlamhthjcra ; Q. crispula : the lower surfaces of th> leaves are 

 attacked. 



(Soixson when the sjx>oies is common) 



Ne;u' Tokyo this six>cies is not rare, sometimes occurring in maderato 

 numlKH'S, but it is not so common .-is Jlyzocallis cipit ifa Essig et Kuw. and 

 jr. qucrcicoht (Mats.) 



(Winginl viviparous fomale) 



All the individuals of each vinixmnis generation are pixvidixl with well 

 develojied wings. 



(Mide and oviparous female) 



I have never obstirved the si^xiuvl forms. 



(Notes on the life history near Tokyo) 



Tlie eggs luvtch at the middle of April, the adults of tlie tirst generation 

 ajipearing at the b.^ginniug of May. 



(Communal life) 



This sixvies and J/. qu-rciaJa (Mats.) are sjmctiaies found together. 



