ArillDID OF FoRMi «.V.Tj;. I37 



Tiie sexnpai';\3 appear to be wiugi'd at times. 



(Male; aud oviparous female) 



The winged males aud wingless oviparous females mako tiuu'r appjrance 

 iiLoufc the liegiuning of November, an! the latter may bo found, w.a- Tokyo, 

 until about the 10th day of December. The males are v(:ry scanty iu number. 



(Intermediate ) 



A brachypterous female was observed on May 11, 1918, near Tokyo. 



(Notes on the life history ne ir Tokyo) 



The eggs hatch at the beginning of April. The adults of the first genera- 

 tion, which are wingless, appear during the last of the same month, and those 

 of the second generation, which are winged or wingless, with the former out- 

 numbering the latter, appear about the 10th day of Ma.y, when they are most 

 abundant. Duiing the summer the insect is so scarce that it is somewhat 

 difficult to detect it in the field. When uewdy en:erged, the abdomens of tlu 

 winged viviparous females are very small, but in a few daj's they become s > 

 large that the insects are not iible to tly. Every oviparous female deposits 

 8— 14 eggs, which, when newly produced, are yellowish brown iu colour, 

 gradually darkening in about a week to a, deep black. All the eggs of all 

 the females iu a single colony are unially deposited in grjups uiun the south 

 side of the stem of the bust tree. 



(Communal hfe; 



This aphis is often attended b}- LoKiim viijer, and I have sametimes 

 observed the ant carrying the young aphis, holding it iu it, uiouth. 



(Habit) 



This aphis grijups rather densely on the upper side of the branches or 

 on the stems, and some wingless females are occasiomdly found in the fissures 

 (if the host trees. In September and November the aphis is often seen grouped 

 on the south side of the stems, where the rays of the suu are falhiig. 



It is very active in habit, unlike many other Lwlmina, and, when 

 apf)roached, it elavates the ].X)sterior pair (->f legs, :is if to ward oil' the olfeud- 

 ing object, and, when strdugly disturbed, it l)egins to walk away or drops t<.) 

 the ground. 



I have s<jmetimes observed the females running about on the host with 

 the young protruding fiM:n the genital opening. 



