Mr. F. Walker's Descriptions of Aphides. 371 



The viviparous winged female. This as a. pupa and when very 

 young is reddish green, but afterwards acquires a rose or pale 

 red colour : the nectaries are as long as one-eighth of the body : 

 the rudimentary wings are pale red ; they are unfolded before 

 the middle of May, and then the insect is deep black : the hind- 

 border of the fore-chest is dark green : the abdomen is green, 

 and sometimes it has a row of black spots on each side : the 

 feelers are black, dull green at the base, and much shorter than 

 the body ; the fourth joint is much shorter than the third ; the 

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

 the fifth ; the seventh is quite as long as the third : the mouth is 

 green ; its tip and the eyes are black : the nectaries are black, 

 and vary in length from one-sixth to one-tenth of the body : the 

 legs are dull yellow ; the feet and the tips of the thighs and of 

 the shanks are black : the wings are colourless and nearly twice 

 the length of the body ; the wing-ribs are green ; the wing-brands 

 are pale brown ; the veins are dark brown : the second fork is 

 very short. 



1st var. Black : the front and the back of the fore-chest, the 

 fore-breast, and the abdomen are dark green : the feelers are a 

 little shorter than the body : the mouth is pale dull yellow with 

 a black tip : the fore-thighs, the shanks except their tips, and 

 the four hinder thighs towards the base are yellow : the wing- 

 ribs and the rib-veins are pale yellow 7 ; the wing-brands are pale 

 brown ; the other veins are brown. 



2nd var. Green : the head, the disc of the chest, and that of 

 the breast are black, and there is a row of black spots on each 

 side of the abdomen : the feelers are black, and about half the 

 length of the body : the nectaries are afeout one-twelfth of the 

 length of the body : the legs are black ; the shanks except their 

 tips, and the thighs towards the base, and sometimes nearly the 

 whole of the fore-thighs are pale yellow : the wing-ribs are some- 

 times pale yellow, and the colour of the wing-brands varies from 

 pale brown to dull green. 



3rd var. The fore-thighs are black with the exception of the 

 base. 



4th var. The body is grass-green : the discs of the head, of the 

 chest and of the breast are pale reddish brown : the feelers are 

 brown, and shorter than the body : the mouth is pale green with 

 a brown tip : the eyes are dark brown : the nectaries are pale 

 green, and about one-sixth of the length of the body : the legs 

 are dull pale green ; the feet and the tips of the shanks are brown : 

 the wing-ribs and the rib-veins are dull green ; the brands and 

 the other veins are brown. On the whitethorn in the middle of 

 May. 



5th var. While a pupa it is green, with two darker green 



