332 Mr. F. Walker's Descriptions of Aphides. 



it is afterwards bright yellow : the sides of the head and of the 

 chest are brown, which colour adds to the linear appearance of 

 the body by forming two continuous lines with the fore-borders 

 of the upper wings when they are at rest : the forehead is convex 

 and somewhat notched : the feelers have alternate black and yel- 

 low rings, and are nearly as long as the body ; the fourth joint 

 is rather more than half the length of the third ; the fifth is a 

 little shorter than the fourth ; the sixth is shorter than the fifth ; 

 the seventh is much shorter than the sixth : the eyes are bright 

 red : the tip of the mouth and the hind-thighs, except the base, 

 are black : the fore-chest is large, a little narrower in front ; its 

 sides are slightly indented : the wings are colourless and much 

 longer than the body; the wing-brands are dark brown; the 

 veins are brown, and their tips are much shaded; the second 

 branch-vein is curved. The pupa is pale yellow and elliptical; 

 the tips of the joints of the feelers are black ; the tip of the 

 mouth and the tips of the feet are brown : the young ones within 

 its body are very small. 



1st variety. Pupa. White and shining : there is a black spot 

 on each side of the chest, and on each side of the abdomen there 

 is one distinct row and a slight indication of a second and outer 

 row of black spots : the tips of the joints of the feelers, the tip of 

 the mouth, and the feet are black. 



2nd variety. Body varied with lemon colour or pale yellow. 



3rd variety. Body yellow with four rows of black dots along 

 the back. 



4th variety. Body bright orange with a row of black spots on 

 each side. 



It is the prey of an Aphidius, and I believe that Myina flava 

 is also one of its parasites. It has sometimes two dozen young 

 ones within its body, and about twelve of these are of large size, 

 the rest are smaller. 



Length of the body 1^ line; of the wings 2^ lines. 



There is a small tubercle on the inner side of the base of each 

 feeler : the main vein of the wing is very strong ; the space be- 

 tween it and the fore-border is yellow along its whole length, but 

 the brand is sometimes colourless with the exception of its border, 

 which is shaded ; the first branch-vein is nearly straight ; the 

 second is curved ; the third is slightly curved and is distinct till 

 very near its source ; it is forked before one-third, and is forked 

 again before two- thirds of its length : the inclination of the main 

 vein both inwards and outwards is very slight : the legs are of 

 moderate length, and the fore-legs are but very little shorter 

 than the hind-legs. 



The oviparous wingless female. This appears in September, and 

 continues beneath the lime-leaves till near the end of October : 



