140 KYOICHI TAK.VII.Vsni: 



This apbis is rather cwiumou near Tokyo, where it is often most almndant 

 in May and Jnue, altliongh their numbers are rodnce;! durin,-; the summer. 



(Winged viviparous females). 



The second, as well as, the third generation consists of l>oth winged and 

 wingless forms, liut all others always include only wingless individuals. Tlie 

 soxuparas are also wingless. 



(Male and oviparous female). 



The males are apterous, small, and ratlier flat, with the eyes and rosti'um 

 rndimentai-y mid the cornic^les absent. The number of mohs seems to l;e 

 scantj'. 



The oviparous females arc wingless, as is common for most of the Aphidinra 

 and are almo.st identical in structure and colour with the windless viviparous 

 female, being provided with a well developed rostrum. 



In the vicinity of Tokj-o, these sexual forms are produced at the begin- 

 ning and near the middle of November. The males ai'e scarcer than the 

 females. 



(Intermediate) 



No intermediates have been noticed. 



(Notes ou the life history near Tokyo) 



Tlie eggs hatch at the lioginning of April and the adult stem-mothers, 

 which are wingless, appaar during the fii-st half of May. The winged and 

 wingless forms of the second generation attain their adult shx^e at the last of 

 ]May or the beginning of June, when they are most alnmdant. After some 

 wingless viviparous gener.ations are repeated during the summer the sexules 

 are produced in the fall. Eich oviparoas female produces two or three largo 

 eggs, which ar<! yellowish in colair when newly laid, latji" darkening 1 1 liLack, 

 deposited upon the stem of the host tree. 



(Communal life) 



Tliis sixHiies is usually covered with tents by L'sius nujer. 



(Habit) 



It is very inactive in habit, grijuping rather densely. 

 (Distribution) 



Japan : Tokyo. 



