AI'illDID.E l)F FORMOSA. 



121 



(Disti-ilintiou) 

 Japan ; Tokyi 



Myzocallis quercicola (Mats.) 



(Host plauts) 



Qucrcus (jlnnduliferu : the lower sides of the leave.?, along the inidriljs, avo 

 attiwked. Tlie J'ouug uymplis of the first generation sometimes feed on tlio 

 upper surface and the st'dks of tlio leaves. 



Quercus dmtata, Q. crispuln : the lower surlaa; of tlie leaves are attack'^]. 



(Season when the insect it common) 



Near Tokyo it is common fi'i>m tlie Ix.'giuuing of May to tlie last of 

 Oct-jber, occasionally occurring in large unml)ers, but g(!Hcr,illy less common 

 during the summer. 



(Winged Oviparous fenuile) 



All the viviparous females are always provid<xl with wings. 



(Male and oviparous female) 



Near Tokyo the winged males and wingless oviparous femak^s make their 

 appearance fir)m the beginning of No\'ember on. The sexnp irae are yellowish 

 in their general col<5U)', and are present from the middle of October to ab(jut 

 the ■20th day of November, during which period tlie abuiidancj takes pkico. 



(Intermediate) 



No intermediates ha\e ever been noticed. 



(Notes on the life history near Tokyo) 



Tlie eggs liatch into nyuipks at the l)egiuuing or middle of April. Tliese 

 nymplis iU'e gi-eenish in colour, unlike those of the second and tlio following 

 generations which are dark purplish. Tlie adults of the first generation occur 

 fivnn the beginning of May on. 



(Distril)ution) 



Japan : Tokyo, Sapporo. 



Myzocallis pseudoalni Takah. 



(Host plant) 



AbiHS /onnosaU''. : the 1 nver fcn.-faces of the leiives are atbicked. 



