230 Memoirs of the Indian Museum. Vor. Wie 
Cauda 5,4 Be MONT Te 
Wing expanse .. 52 FASO OURS 
Wing & u ISO 40:75 ame 
The pupae have the anterior part of the abdomen much darker than the posterior. 
The head generally shows two brown bands placed lengthwise; the split for the final 
ecdysis takes place between them. The mesothorax and shoulders are greenish- 
white ; the wing pads are tipped with a dusky colour. The rostrum reaches up to 
the third coxae. 
Apterous oviparous female.—The apterous oviparous female is very similar to the 
apterous viviparous female in the salient features of its anatomy. ‘The body is a 
little longer, somewhat fusiform, specially towards the cauda. ‘The colour is greenish, 
with an olive or red-brown tinge. The cauda is broadly conical and blunt. A 
noteworthy feature is the presence of the swollen hind tibiae, which are slightly 
smaller than those of the apterous viviparous female in the ratio of 8 to 9. The 
surface is covered with small sensoria, placed mostly on the upper three-fourths of 
the length. They are readily recognised as they walk with an awkard gait. 
Eggs.—The body contains only one egg, which occupies about three quarters of 
the whole abdomen. It is either laid in some convenient place or the body of the 
Aphid shrivels over it, serving as an additional protective covering. Probably in such 
cases it is too big to be passed and the mother dies in the attempt. The egg is of the 
usual elongate oval type, brown in colour; after three days or so it changes to shining 
black. These females are produced in late December and may even be secured in 
January or February. 
Males.—This species is remarkable for the production of numerous different kinds 
of males. In November the apterous viviparous females begin to bring forth dull 
orange coloured young. These after their usual four moults become adults. The 
colour remains the same or gets slightly darker, the legs and antennae being propor- 
tionately longer and blacker than other forms. There is a very strongly developed 
genital armature consisting of a protrusible penis, contained within the lateral conical 
lobes, and the whole bounded within the elliptic black ring. 
The antennal joints are distinct, quite black, and studded with numerous small 
secondary sensoria on all the joints; they are for that reason thicker also. 
Length proportions :— 
III. Ve WE VI. 
16 En 10 74+ 33 
Sensoria small and scattered all round; the numbers are on an average about 
11-12 on III; 8-10 on IV; 12-13 on V and 1-3 on VI, besides the primary sensoria. 
Cauda raised upwards, so that the genitalia comes into view even from the 
dorsum. 
There are the following three different kinds of males, which normally form in the 
field as well as in the laboratory, and all the three kinds may be found on a plant at 
the same time : — 
