Mr. F. Walker’s Descriptions of Aphides. 15 
dark green, but when full-grown it is pale green, oval, convex, 
plump, and smooth, but not shining : the front is slightly convex, 
and not notched : the limbs are pale yellow; the feelers towards 
their tips, the tip of the mouth, the feet, and the tips of the 
shanks and of the nectaries are brown: the feelers are rather less 
than half the length of the body ; the first and the second joints 
are not angular ; the fourth joit is much shorter than the third ; 
the fifth is shorter than the fourth; the sixth is much shorter 
than the fifth ; the seventh is more than twice the length of the 
sixth; the nectaries are about one-sixth or one-eighth of its 
length. 
lst var. Pale green mottled with dark green. 
2nd var. Pale yellowish green. 
ord var. Of a fine amber colour. Intermediate varieties also 
occur. 
4th var., &c. In midsummer the masses on the young shoots 
are very thick, and the insect then has a great variety of 
tints; its colour passes from pale red or green to the hue of 
a mellow peach, or to dark red, and sometimes the whole of 
the body is black: the legs are red; the four hinder thighs 
except the base, the knees, the feet, and the tips of the shanks, 
are black. 
5th var. Pale red, shining, reddish green beneath : the back, 
with the exception of a line along the middle and the borders of 
the segments, is red: the feelers are black, green at the base, and 
shorter than the body : the mouth is green; its tip, the eyes and 
the nectaries are black, and the latter are one-twelfth of the 
length of the body : the legs are black: the fore-thighs, the base 
of the other thighs, and the shanks except their tips are yellow. 
On the cherry in July. 
6th var. Bright red, with four or more indistinct rows of little 
black dots along the back: the head is dark red : the feelers are 
white, dark red at the base, black towards the tips, and rather 
more than half the length of the body : the mouth and the legs 
are dull white; the tip of the mouth, the eyes, the nectaries, the 
hind-thighs except the base, the knees, the feet, and the tips of 
the shanks, are black. End of July. 
In this form it is especially subject to the attacks of its enemies: 
Trombidium holosericeum devours it ; and an Aphidius, an Allotria, 
Ceraphron Carpenteri, and Myina Chaonia are its parasites. 
‘7th var. The feelers are brown, pale yellow at the base; the 
mouth is pale yellow with a brown tip: the nectaries are pale 
yellow with brown tips, and are one-sixth or one-eighth of the 
length of the body: the legs are pale yellow; the feet and the 
tips of the shanks are brown. 
8th var. The body is black, aud other varieties occur when it 
