216 Memoirs of the Indian Museum. [VoL Vas 
Measurements :— 2 
Body ts ei AT 200 SOPHIE 
‚Antennae = he 20:90. 10m} 
Cornicle a 37 SE 072 
Cauda de mt oz 
Alate viviparous female.—Body-colour yellow; portions behind the cornicles and 
at their level full of greenish globules ; the posterior part of the abdomen may be quite 
dark greenish: the usual pattern of three carinal spots ; one cornicular and two bands 
on the last two segments are present. | 
Head, antennae, thorax, legs, cornicles and caudal tip black. 
Antennal proportions :— 
III. HAVE Ve VE 
12 9 7 53 +14. 
Lengths .. 0°20 O15 0'13 0'08+0'23 mm. 
Sensoria large, circular ; they are seldom more than five but may be six or as few 
as three, generally placed in a line. 
Cornicle smaller than that of the apterous female, conical and imbricate ; it does 
not reach to the base of the cauda. 
The cauda has the constriction between the base and tip rather ill-defined ; itisa 
little longer than half the cornicle. 
Genital plate larger than that of the apterous female, less dark than the anal plate. 
The rostrum reaches up to the edge of the mesosternal bosses. 
Wings rather small, well-rounded, with brown veins and greenish stigma. 
_ Measurements :-— | 
Body 2 se 6 7:20, 5% 245, mm. 
Antennae 53 à .. 0°90 mm. or less. 
Wing expanse .. = a A220 Br 
Cornicle sa as oO LO ae 
Cauda # Re ee O TOME 
The pupae are characteristic, appearing as if constricted between the thorax and 
abdomen. Anterior half of abdomen bright yellow or even orange; posterior half 
dark greenish. The head bears two blackish lengthwise marks, between these the 
skin splits in moulting, Thorax greenish with light green, almost white, shoulders, 
tipped with jet black. Two median rows of white spots, a pair to each segment, 
extend from the head to the caudal base; on the abdomen they widen out a little. 
Parallel to these are placed four similar spots on either lateral edge. 
This small Aphid is extremely polyphagous and infests plants of widely different 
orders. It is not infrequently found feeding .in company with other malviform 
Aphids, and can only be recognized from A. malvae or A. durranti by the structure of 
its antennae. 
It can be collected almost throughout the year except in the summer. 
It is likely that this insect occurs in other parts of the world also, and has been 
